Use the Richter scale formula R = log (I / I0) to find the magnitude of an earthquake that has the following intensity. (a) 1,000 times that of I0 (b) 100,000 times that of I0

The area of the figure which consists of two trapezoids is calculated as: 186.0 cm².

The figure is composed of two trapezoids. Therefore, the area of the figure would be the sum of the areas of both trapezoids.

Area of trapezoid 1 = 1/2 * (a + b) * h

a = 20.0 cm

b = 12.0 cm

h = 6.0 cm

Area of trapezoid 1 = 1/2 * (20.0 + 12.0) * 6.0 = 96.0 cm²

Area of trapezoid 2 = 1/2 * (a + b) * h

a = 20.0 cm

b = 10.0 cm

h = 6.0 cm

Area of trapezoid 2 = 1/2 * (20.0 + 10.0) * 6.0 = 90.0 cm²

Area of the figure = 96.0 + 90.0 = 186.0 cm²

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The polar form of the complex number quotient z = (1+3i)/(6+8i) is z = (1/sqrt(10))e^(i0.262)

To express the complex number quotient z = (1+3i) / (6+8i) in polar form, we need to find its magnitude (r) and argument (θ).

First, we find the magnitude of z:

|z| = sqrt( (1^2+3^2) / (6^2+8^2) )

|z| = sqrt(10/100)

|z| = sqrt(1/10)

|z| = 1/sqrt(10)

Next, we find the argument of z:

θ = arctan(3/1) - arctan(8/6)

θ = arctan(3) - arctan(4/3)

θ ≈ 0.262 radians

The polar form is z = (1/sqrt(10))e^(i0.262)

This represents the magnitude and direction of the complex number in terms of its distance from the origin (magnitude) and its angle with respect to the positive real axis (direction).

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The given question is incomplete, the complete question is:

Express the quotient z = 1+3i /  6 +8i as z = re^(iθ)

The absolute maximum value is 2 at t = -1, and the absolute minimum value is -12 at t = 6.

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The exact sum of the finite geometric series is 14(1 - 0.1 * 0.0001) / (1 - 0.1).

To find the exact sum of the finite geometric series 14 + 14(0.1) + 14(0.1)² + 14(0.1)³, we can use the formula for the sum of a finite geometric series: S = a(1 - rⁿ) / (1 - r), where 'a' is the first term, 'r' is the common ratio, and 'n' is the number of terms.

In this case, we have:
a = 14 (the first term)
r = 0.1 (the common ratio)
n = 4 (the number of terms)

Now, let's plug these values into the formula:
S = 14(1 - 0.1⁴) / (1 - 0.1)

Calculating the values:
S = 14(1 - 0.0001) / (0.9)

Now, we can write the answer in the form a(1 - bc) / (1 - b):
a = 14
b = 0.1
c = 0.0001

Therefore, the exact sum of the finite geometric series is 14(1 - 0.1 * 0.0001) / (1 - 0.1).

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The volume of the solid enclosed by the hyperboloid [tex]\frac{9}{2\pi }[/tex]

The hyperboloid's equation must be expressed in terms of r,θ, z in order to use polar coordinates.

[tex]$-x^2 - y^2 + z^2 = 6$[/tex]

Since[tex]$x = r\cos\theta$ and $y = r\sin\theta$[/tex], we can substitute and get:

[tex]$-r^2\cos^2\theta - r^2\sin^2\theta + z^2 = 6$[/tex]

Simplifying, we get:

[tex]$r^2 = \frac{6}{1-z^2}$[/tex]

Now, we need to find the limits of integration for r,θ and z. We know that the plane z = 3 intersects the hyperboloid when:

[tex]$-x^2 - y^2 + 3^2 = 6$[/tex]

Simplifying, we get:

$x^2 + y^2 = 3$

This is the equation of a circle centered at the origin with radius [tex]$\sqrt{3}$[/tex]. Since we're using polar coordinates, we can express this as:

[tex]$r = \sqrt{3}$[/tex]

For [tex]$\theta$[/tex], we can use the full range[tex]$0\leq \theta \leq 2\pi$[/tex]. For z, we have[tex]$0\leq z \leq 3$.[/tex]

Now, we can set up the triple integral to find the volume:

[tex]$V = \iiint dV = \int_{0}^{2\pi}\int_{0}^{\sqrt{3}}\int_{0}^{3} r,dz,dr,d\theta$[/tex]

Solving the integral, we get:

[tex]$V = \int_{0}^{2\pi}\int_{0}^{\sqrt{3}} 3r,dr,d\theta = 3\pi\int_{0}^{\sqrt{3}} r,dr = \frac{9}{2}\pi$[/tex]

Therefore, the volume of the solid enclosed by the hyperboloid [tex]$-x^2 - y^2 + z^2 = 6$[/tex]and the plane [tex]$z = 3$[/tex] is   [tex]\\\frac{9}{2\pi }[/tex]

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44. The cumulative frequency graph from the histogram is option A

45. E. none of above

A cumulative frequency graph, also known as an ogive, is a type of graph used in statistics to represent the cumulative frequency distribution of a dataset.

The graph displays the running total of the frequency of each value in the dataset on the y-axis, while the x-axis shows the values in the dataset.

Given that x = 1/2, y = 2/3 and z = 3/4

To evaluate x + y + z we use addition of fraction as follows

1/2 + 2/3 + 3/4

we convert to have same base of 12

6/6 * 1/2 + 4/4 * 2/3 + 3/3 * 3/4

6/12 + 8/12 + 9/12

adding results to

23/12 OR 1 11/12

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The value of the given integral is 1/2.

To convert the integral to polar coordinates, we need to find the polar limits of integration and the Jacobian.

The region of integration is the half-disk with radius 1 centered at the origin in the first quadrant. In polar coordinates, this region is described by 0 ≤ r ≤ 1 and 0 ≤ θ ≤ π/2.

The Jacobian is r.

So, we have:

∫10∫√2−x2x(x+2y)dydx = ∫0π/2 ∫01 (r cosθ)(r cosθ + 2r sinθ) r dr dθ

= ∫0π/2 ∫01 r3(cos2θ + 2sinθ cosθ) dr dθ

= ∫0π/2 [(1/4)(cos2θ + 2sinθ cosθ)] dθ

= [(1/4)(sin2θ + 2sin2θ/2)]|0π/2

= (1/2)

Therefore, the value of the given integral is 1/2.

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The value of the given integral is 1/2.

To convert the integral to polar coordinates, we need to find the polar limits of integration and the Jacobian.

The region of integration is the half-disk with radius 1 centered at the origin in the first quadrant. In polar coordinates, this region is described by 0 ≤ r ≤ 1 and 0 ≤ θ ≤ π/2.

The Jacobian is r.

So, we have:

∫10∫√2−x2x(x+2y)dydx = ∫0π/2 ∫01 (r cosθ)(r cosθ + 2r sinθ) r dr dθ

= ∫0π/2 ∫01 r3(cos2θ + 2sinθ cosθ) dr dθ

= ∫0π/2 [(1/4)(cos2θ + 2sinθ cosθ)] dθ

= [(1/4)(sin2θ + 2sin2θ/2)]|0π/2

= (1/2)

Therefore, the value of the given integral is 1/2.

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The sum of the finite geometric series in the problem is given as follows:

26,240.

The first term of the series is given as follows:

[tex]a_1 = 8[/tex]

The common ratio of the series is given as follows:

r = 3.

(as each term is the previous term multiplied by 3).

The rule for the nth term of the series is given as follows:

[tex]a_n = 8(3)^{n - 1}[/tex]

Considering that the final term is of 17496, the value of n is given as follows:

[tex]17496 = 8(3)^{n - 1}[/tex]

3^(n - 1) = 2187

3^(n - 1) = 3^7

n - 1 = 7

n = 8.

Hence the sum of the series is given as follows:

S = [8 - 8 x 3^8]/-2

S = 26,240.

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Yes the two triangles ΔCDE & ΔABC are similar according to the rules of similarity of triangles.

What is similarity?

If two triangles have the same proportion of matching sides to matching angles, they are said to be similar. Similar figures are items that share the same shape but differ in size between two or more figures or shapes.

Given that in ΔCDE,

∠DEC=55°

EC=40 ft

DE=25 ft

Also Given that in ΔCAB,

∠ABC=55°

BE=60 ft

Consider ΔCDE & ΔCAB

∠ABC = ∠DEC = 55°

∠C = ∠C

∠CAB =180-( ∠C+∠B)

          =180-(∠C +55)

∠CDE= 180- (∠C+∠E)

         =180-(∠C +55)

∠CAB =∠CDE=180-(∠C +55)

As three angles are congruent, the triangles are similar.

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The Inverse Laplace Transform of F(s)=(9)+(15/s)+(16/s∧2) is f(t) = 9*del(t) + 15 + 16*t.

To determine the Inverse Laplace Transform of F(s) = 9 + (15/s) + (16/s^2), we will use the given form f(t) = A*del(t) + B + Ct, where del(t) is the delta function equal to 1 at t=0 and zero everywhere else.

Step 1: Identify the corresponding inverse Laplace transforms for each term.
- For the constant term 9, its inverse Laplace transform is 9*del(t), where A = 9.
- For the term 15/s, its inverse Laplace transform is 15, where B = 15.
- For the term 16/s^2, its inverse Laplace transform is 16*t, where C = 16.

Step 2: Combine the inverse Laplace transforms.
f(t) = 9*del(t) + 15 + 16*t

So, the Inverse Laplace Transform of F(s) = 9 + (15/s) + (16/s^2) is f(t) = 9*del(t) + 15 + 16*t.

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Answer:

no answer

Step-by-step explanation:

The probability of exactly three bulbs being replaced before the end of March is approximately 0.0126 or 1.26%.

To solve this problem, we need to use the exponential distribution formula:
f(x) = (1/β) * e^(-x/β)
where β is the mean and x is the time period.
In this case, β = 6 months, and we need to find the probability of exactly three bulbs being replaced before the end of March, which is three months from New Year's Eve.
So, we need to find the probability of three bulbs being replaced within three months, which can be calculated as follows:
P(X = 3) = (1/6)^3 * e^(-3/6)
         = (1/216) * e^(-0.5)
         ≈ 0.011
Therefore, the probability that exactly three bulbs will be replaced before the end of March is approximately 0.011.
To answer this question, we will use the Poisson distribution since it deals with the number of events (in this case, lightbulb replacements) occurring within a fixed interval (the time until the end of March). The terms used in this answer include exponential lifetime, mean, Poisson distribution, and probability.
The mean lifetime of the lightbulb is 6 months, so the rate parameter (λ) for the Poisson distribution is the number of events per fixed interval. In this case, the interval of interest is the time until the end of March, which is 3 months.
Since the mean lifetime of the bulb is 6 months, the average number of bulb replacements in 3 months would be (3/6) = 0.5.
Using the Poisson probability mass function, we can calculate the probability of exactly three bulbs being replaced (k = 3) in the 3-month period:
P(X=k) = (e^(-λ) * (λ^k)) / k!
P(X=3) = (e^(-0.5) * (0.5^3)) / 3!
P(X=3) = (0.6065 * 0.125) / 6
P(X=3) = 0.0126
So the probability of exactly three bulbs being replaced before the end of March is approximately 0.0126 or 1.26%.

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As a result, none of the above systems have a solution of (-5,-1).

To see which systems have a solution of (-5, -1), enter x=-5 and y=-1 into the two equations and see if they are both true at the same time.

So, let's enter the values:

A(-5) + B(-1) = C is the solution to the first equation.

To simplify: -5A - B = C

D(-5) + E(-1) = F is the solution to the second equation.

Simplifying: -5D - E = F

As a result, the equation system can be represented as:

-5A = C -5D = E = F

Now we may enter x=-5 and y=-1 into the system and see if the equations still hold true.

When A=1, B=-5, and C=20, the expression -5A - B = C should be true.When D=1, E=-5, and F=30, D - E = F should be true.

As a result, the equation system becomes:

1x - 5y = 20

1x - 5y = 30

If we attempt to solve We have a contradiction in this system since the two equations are incompatible. As a result, there is no solution to this system of equations that meets (-5,-1).

As a result, none of the above systems have a solution of (-5,-1).

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Complete question:

Suppose the following system of equations has a solution of

where A, B, C, D, E, and F are real numbers.

Ax+By=C

Dx+Ey=F

Which systems are also guaranteed to have a solution of (–5,–1)? Select all that apply.

The velocity vector at t=2 is 3i + j + k.

The speed at t=2 is sqrt(11).

The acceleration vector at t=2 is 1/2k.

To find the velocity vector, we need to take the derivative of the position vector with respect to time:
v(t) = dr/dt = 3i + j + 1/2t k

Substituting t=2, we get:
v(2) = 3i + j + k

To find the speed, we need to take the magnitude of the velocity vector:
s(t) = |v(t)| = sqrt(3^2 + 1^2 + 1^2) = sqrt(11)

Substituting t=2, we get:
s(2) = sqrt(11)

To find the acceleration vector, we need to take the derivative of the velocity vector with respect to time:
a(t) = dv/dt = 1/2k

Substituting t=2, we get:
a(2) = 1/2k

Therefore, the velocity vector at t=2 is 3i + j + k, the speed at t=2 is sqrt(11), and the acceleration vector at t=2 is 1/2k.

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The device is:

P(X > 7) = 1 - P(X ≤ 7) = 1 - F(7) = 1 - (-(1/7^2) + 1) = 0.0204

a) To confirm that f(x) is a probability density function, we need to check that it satisfies two properties: non-negativity and total area under the curve equal to 1.

Non-negativity: f(x) is non-negative for all x in its domain (1, infinity).

Total area under the curve:

∫1∞ f(x) dx = ∫1∞ 2x^(-3) dx

= [-x^(-2)] from 1 to ∞

= [-(1/∞) - (-1/1)]

= 1

Since f(x) satisfies both properties, it is a probability density function.

b) The cumulative distribution function (CDF) is given by:

F(x) = P(X ≤ x) = ∫1x f(t) dt

For x ≤ 1, F(x) = 0, since the smallest possible value of X is 1.

For x > 1, we have:

F(x) = ∫1x f(t) dt = ∫1x 2t^(-3) dt

= [-t^(-2)] from 1 to x

= -(1/x^2) + 1

So the CDF for this distribution is:

F(x) = {0 for x ≤ 1

-(1/x^2) + 1 for x > 1}

c) To find the mean, we use the formula:

E(X) = ∫1∞ x f(x) dx

= ∫1∞ x(2x^(-3)) dx

= 2 ∫1∞ x^(-2) dx

= 2 [-x^(-1)] from 1 to ∞

= 2(1-0)

= 2

So the mean of the distribution is 2.

d) The probability that the size of a random particle will be less than 5 micrometers is:

P(X < 5) = F(5) = -(1/5^2) + 1 = 0.96

e) The proportion of particles that will be detected by the device is:

P(X > 7) = 1 - P(X ≤ 7) = 1 - F(7) = 1 - (-(1/7^2) + 1) = 0.0204

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The final answr is F(x) = -8 cos(x) + (8cos(7/2)/7)x - 1.

Integrating, also known as integration, is a fundamental concept in calculus that involves finding the area under a curve or the accumulation of a quantity over a given interval. Integration is the opposite of differentiation, which involves finding the slope of a curve at a given point.

There are two main types of integrals: definite integrals and indefinite integrals. A definite integral involves finding the area under a curve over a specific interval, while an indefinite integral involves finding a function whose derivative is equal to the original function.

To find f given that f''(x) = 8 cos(x), we need to integrate this expression twice with respect to x to obtain f(x).

Integrating f''(x) once gives:

f'(x) = ∫ f''(x) dx = ∫ 8 cos(x) dx = 8 sin(x) + C1

where C1 is the constant of integration.

Integrating f'(x) once more gives:

f(x) = ∫ f'(x) dx = ∫ (8 sin(x) + C1) dx = -8 cos(x) + C1x + C2

where C2 is another constant of integration.

We can solve for the constants of integration using the initial conditions:

f(0) = -1 implies -8cos(0) + C1(0) + C2 = -1, so C2 = -1

f(7/2) = 0 implies -8cos(7/2) + C1(7/2) - 1 = 0, so C1 = 8cos(7/2)/7

Thus, the solution for f(x) is:

f(x) = -8 cos(x) + (8cos(7/2)/7)x - 1

Therefore, f(x) = -8 cos(x) + (8cos(7/2)/7)x - 1.

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Answer:

The answer is 11 to the nearest tenth

Using the function rule, y = 19 - 2x, the table can be filled as follows:

x       y

1       17

3      13

4      11

6      7.

A function is a mathematical equation that represents the relationship between the independent variable and the dependent variable.

The independent variable is the domain while the dependent variable is the codomain of the function.

The codomain depends on the domain.

x       y

1       17 (19 -2(1)

3      13 (19 -2(3)

4      11 (19 -2(4)

6      7 (19 -2(6)

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Answer: 272/3 OR 90.67

Step-by-step explanation:

First, turn the mixed fraction into an improper fraction. Using the times-addition method, you take the whole number (2) and multiply it by the denomitor (3). You get 6, and then add the numerator (2) to 6, getting 8, so th improper fraction of the first term is 8/3.

Then, you multiply 8/3 by 34. To do this, you do 8 times 34 divided by 3. 34 times 8 is 272, and then you divide it by 3. You don't get a whole number, so the answer could be written as 272/3 or 90.67

The histogram of the sale price of houses appears to be skewed to the right, indicating that the majority of sale prices are located on the lower end of the price range. The majority of sale prices seem to be located between $100,000 and $400,000, with very few sale prices above $600,000.

An exponential distribution would not be a reasonable fit for the sale price of homes because it assumes a continuous variable with a constant rate of change. The sale price of homes is not a continuous variable, as it is determined by factors such as location, condition, and size. A normal distribution could potentially be a reasonable fit if the data was centered around a mean and did not have any significant outliers. However, as the histogram shows a skewed distribution, a gamma distribution may be a more appropriate fit as it allows for skewness in the data.

The scatterplot of first floor area vs. sale price shows a positive relationship between the two variables. As the first floor area increases, the sale price tends to increase as well. However, there appears to be a lot of variability in the sale price as the area increases. This suggests that other factors may be influencing the sale price of homes, in addition to the size of the first floor area.

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The event of rolling a sum of the numbers uppermost is 6 is E = {(1,6), (2,6), (3,6), (4,6), (5,6), (6,6)}. The correct answer is b.

The event of rolling a sum of the numbers uppermost is 6 can occur in different ways, for example, rolling a 1 on the first die and a 5 on the second, or rolling a 2 on the first die and a 4 on the second, and so on.

The sum of the numbers on the dice is 6 in each of these cases. The set of all possible outcomes of this experiment is the sample space S, which consists of all possible pairs of numbers on the dice, such as (1,1), (1,2), (1,3), ..., (6,5), (6,6).

The event E of rolling a sum of 6 is the set of all pairs of numbers on the dice that add up to 6, which is E = {(1,5), (2,4), (3,3), (4,2), (5,1), (6,0)}.

Option b is the only answer choice that includes all these pairs of numbers, so it is the correct answer.

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The size of the set |E ∩ B| is 2, and the size of the set |B| is 3.

There are six possible outcomes when two dice are thrown:
{(1,1), (1,2), (1,3), (2,1), (2,2), (2,3), (3,1), (3,2), (3,3), (4,1), (4,2), (4,3), (5,1), (5,2), (5,3), (6,1), (6,2), (6,3)}.

Out of these 18 outcomes, the following three satisfy the event E (both dice are odd): (1,3), (3,1), and (3,3).
The following outcomes satisfy event B (the blue die is odd): (1,1), (1,3), (2,1), (2,3), (3,1), and (3,3).

Therefore, the size of the set |E ∩ B| is 2 (the two outcomes that satisfy both events are (1,3) and (3,1)), and the size of the set |B| is 3 (three outcomes satisfy the event B).

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The equation ý - Bo + BIx represents the sample regression function in the regression equation y = B0 + BIxI + ua.

What is the sample regression function?

It shows the relationship between the dependent variable y and the independent variable x, with B0 being the y-intercept and BIx being the slope of the regression line.

The explained sum of squares (SSE) measures the variability in y that is explained by the regression equation, while the total sum of squares (SST) measures the total variability in y.

The population regression function is the regression equation that applies to the entire population, while the sample regression function applies only to the sample data.

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Summary for elements is: Sole proprietorship, partnership, limited liability company, corporation. Factors are: Insider trading regulations, company policies, market impact, personal financial situation.

Let's start by summarizing the required elements for various business entities described.

1. Sole Proprietorship:
Required elements: Single owner, personal liability for business debts, no legal separation between the owner and the business.
Example: A small bakery run by an individual owner.

2. Partnership:
Required elements: Two or more partners, shared profits and losses, personal liability for business debts.
Example: A law firm with multiple partners working together.

3. Limited Liability Company (LLC):
Required elements: Legal separation between owners and business, limited liability for business debts, flexible management structure.
Example: A consulting firm organized as an LLC.

4. Corporation:
Required elements: Legal separation between owners and business, limited liability for business debts, formal management structure with directors and officers, shares issued to represent ownership.
Example: A technology company with shareholders and a board of directors.

Similarities and differences: Sole proprietorships and partnerships have personal liability, while LLCs and corporations offer limited liability. LLCs and corporations also have legal separation between the owners and the business, unlike sole proprietorships and partnerships.

Now, let's discuss factors considered when a director of a company makes a large trade of the company's stock:

1. Insider trading regulations: Directors must comply with securities laws, avoiding trading based on non-public information.
2. Company policies: The director should follow any internal policies regarding stock trading, like blackout periods or approval requirements.
3. Market impact: The director should consider the potential impact of their trade on the company's stock price and market perception.
4. Personal financial situation: The director might consider their own financial goals, tax implications, and diversification needs.

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Answer:

can be written as this in interval notation

[tex]( - 4 . \infty ) [/tex]

Step-by-step explanation:

since x is greater than -4 it is always going to be positive infinity on the right with -4 on the left.

if it is less than -4 then it is always going to be negative infinity on the left with -4 on the right

You can write the interval notation for the given set as:
(-4, ∞)

To write the set {x | x > -4} in interval notation, follow these steps:

1. Identify the lower limit of the interval: In this case, the lower limit is -4.
2. Identify the upper limit of the interval: Since x > -4, there is no upper limit, so we'll use infinity (∞) as the upper limit.
3. Determine whether the lower and upper limits are included in the set: In this case, x is strictly greater than -4, so -4 is not included. Therefore, we use the parenthesis "(" for the lower limit.

Interval notation is a way to describe continuous sets of real numbers by the numbers that bound them. Intervals, when written, look somewhat like ordered pairs. However, they are not meant to denote a specific point. Rather, they are meant to be a shorthand way to write an inequality or system of inequalities.

Now, you can write the interval notation for the given set as:

(-4, ∞)

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By mathematical induction we know that P(n) is true for all integers n > 4

We have proven that [tex]2^n > n^2[/tex] for all integers n > 4.

=> Let P(n) be the proposition that [tex]2^n > n^2[/tex], n > 4

Put n = 5

[tex]2^5 > 5^2[/tex]

32 > 25

It is true for n = 5

=> For the inductive hypothesis we assume that P(k) holds for an arbitrary integer k > 4

Let P(k) be true where k is greater than 4

That is, we assume that

[tex]2^k > k^2[/tex], k > 4

Under this assumption, it must be shown that, it is true for p(k+1).

[tex]= > 2^k^+^1=2.2^k\\\\=2^k+2^k > k^2+k^2\\\\=k^2+k.k > k^2+4k\\\\=(k+1)^2\\\\[/tex]

This shows that P(k + 1)  is true under the assumption that P(k) is true.

This completes the inductive step.

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Therefore, a particular solution to the equation y″ + 6y′ + 8y = 54 is yp = 27/4.

To find a particular solution to the equation y″ + 6y′ + 8y = 54, we can use the method of undetermined coefficients.

First, identify the general form of the particular solution based on the non-homogeneous term: Since the right side of the equation is a constant (54), we can guess that the particular solution will be in the form of yp = A, where A is a constant.

Next, substitute the guess into the equation: The first and second derivatives of yp = A are both 0 (y′ = 0, y″ = 0). So, substituting into the equation, we get 0 + 6(0) + 8A = 54.

Now, solve for the constant A: 8A = 54, so A = 54/8 = 27/4.

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