Question

In: Advanced Math

For the following exercises, use the graphs to write a polynomial function of least degree.

For the following exercises, use the graphs to write a polynomial function of least degree.

Solutions

Expert Solution

Consider the graph provided in the exercise.

Start from left,

The first zero occurs at x = -2/3. It is crossing x-axis linearly so it has multiplicity of 1.

The second zero occurs at x = 0.5. It is crossing x-axis linearly so it has multiplicity of 1.

The third zero occurs at x = 4/3. It is crossing x-axis linearly so it has multiplicity of 1.

 

Combine all this,

f(x) = a(x + 2/3)(x – 1/2)(x – 4/3)

 

To determine stretch factor a, put y intercept (0, 8) in the equation.

8 = a(0 + 2/3)(0 – 1/2)(0 – 4/3)

8 = a4/9

a = 72/4

a = 18

 

Hence, the function is f(x) = 18(x + 2/3)(x – 1/2)(x – 4/3).


Hence, the function is f(x) = 18(x + 2/3)(x – 1/2)(x – 4/3).

Related Solutions

For the following exercises, use the graphs to write an equation for the function.
For the following exercises, use the graphs to write an equation for the function.
Which of the following graphs best illustrates the graph of a fifth degree polynomial function whose leading coefficient is positive?
Which of the following graphs best illustrates the graph of a fifth degree polynomial function whose leading coefficient is positive?
Write a MATLAB function, called arbpoly, that computes a polynomial arbitrary nth degree. The function will...
Write a MATLAB function, called arbpoly, that computes a polynomial arbitrary nth degree. The function will take 2 inputs: 1) the first input will be a row vector, c, containing the coefficients of the polynomial, starting with the coefficient of the highest - degree term; 2) the second input will be a scalar, x, which is a real number at which the polynomial will be evaluated. The function's only output, y, will be the scalar value of the polynomial computed...
State whether the function is a polynomial function or not. If it​ is, give its degree....
State whether the function is a polynomial function or not. If it​ is, give its degree. If it is​ not, tell why not. 4(x-1)^12(x+1)^7
Find a third-degree-polynomial model of salinity  as a function of time . Use the general form of...
Find a third-degree-polynomial model of salinity  as a function of time . Use the general form of a polynomial in the box on page 114 of our textbook. Hint: proceed much as you did for the quadratic model, and look ahead to the next paragraph. Explain why it’s possible to find more than one third-degree-polynomial model that fits the data perfectly. Use your third-degree-polynomial model to predict the salinity at . Make a large graph of your third-degree-polynomial model, at least...
A cylinder has a radius of x + 2 units and a height of 3 units greater. Express the volume of the cylinder as a polynomial function. For the following exercises, write the polynomial function that models the given situation.
For the following exercises, write the polynomial function that models the given situation. A cylinder has a radius of x + 2 units and a height of 3 units greater. Express the volume of the cylinder as a polynomial function.
Create a function f(x) of at least degree 3 that has at least three terms. For that function, use derivatives to find the following information:
  Create a function f(x) of at least degree 3 that has at least three terms. For that function, use derivatives to find the following information: 1. The function needs to have at least one maximum or minimum value.    2.        Find the domain of f(x) 3.       Find the y-intercept f(x) 4.        End behavior: Find the limit of the f(x) as x approaches both ∞ and -∞ 5. Find the increasing and decreasing interval(s) of f(x) 6.        Find the interval(s)...
Let P(x) be a polynomial of degree n and A = [an , an-1,.... ] Write...
Let P(x) be a polynomial of degree n and A = [an , an-1,.... ] Write a function integral(A, X1, X2) that takes 3 inputs A, X0 and X1 A as stated above X1 and X2 be any real number, where X1 is the lower limit of the integral and X2 is the upper limit of the integral. Please write this code in Python.
Let P(x) be a polynomial of degree n and A = [an , an-1,.... ] Write...
Let P(x) be a polynomial of degree n and A = [an , an-1,.... ] Write a function integral(A, X1, X2) that takes 3 inputs A, X0 and X1 A as stated above X1 and X2 be any real number, where X1 is the lower limit of the integral and X2 is the upper limit of the integral. Please write this code in Python. DONT use any inbuilt function, instead use looping in Python to solve the question. You should...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT