Undergraduate

Consider the function f ( x ) = x 4 - 3 x 3 - 2 0 x 2 - 2 4 x - 8

Consider the function f(x)=x4-3x3-20x2-24x-8.
A) Find the zeros of the function f(x) given above.
[5 pt]
B) Write the function f(x) given above as a product of linear factors (in a completely factored form).
[2 pt](HINT: You need to use your answers from part A.)
f(x)=
q,
Find a 4th degree polynomial that satisfies the following conditions:
[3 pt]
i and 3i are zeros and f(-1)=-80.
f(x)=
Follow the directions given in each problem. Show ALL work for FULL credit. Correct answers with no work shown will not receive full credit. Incorrect answers with work may receive partial credit. Place your final answer in the space provided. Point value for each is given in parentheses.
A.) Fill in the blanks: If the functions f and g are inverses of each other, then
f[g(x)]=
and g[f(x)]=
[2 pt]
B.) Are the functions f and g inverses of each other? Show work to support your answer. [4 pt]
f(x)=3x7,g(x)=7x-3
B
2.) Consider the function f(x)=5x3-6.
A.) Explain how you would verify the function f is one-to-one. (You do NOT have to do it, just EXPLAIN what you would do!)
B.) Find the inverse function of f.
4pt
The graph of a function f is given below.
A) Is the function f one-to-one. [1 pt]
A.
B) State the domain and the range of the function f.1.5pt
Domain
Range
C) Neatly sketch the graph of the inverse function, f-1, on the same grid above that contains the graph of f.[2 pt]
D) State the domain and the range of the function f-1.[1.5 pt]
Domain
Range:
E) Describe the relation between the graph of f and the graph of f-1.[2 pt]
PLEASE SHOW ALL WORK
Follow the directions given in each problem. Show ALL work for FULL credit. Correct answers with no work shown will not receive full credit. Incorrect answers with work may receive partial credit. Place your final answer in the space provided. Point value for each question is given in brackets.
1.) Complete the following [3 pt]: The Remainder Theorem states that if r is the remainder after dividing the polynomial function f(x) by (x-c), ther
2.) Complete the following [3pt]: The Factor Theorem states that if c is a zero of a polynomial function, then is a of the same polynomial function.
3.) Complete the following 3pt : A zero of a polynomial function is any number that makes
q,
4.) List two of the three characteristics of the graphs of a polynomial function that we have discussed in class. [4 pt]
5.) Given that -1 is a zero of the polynomial f(x)=x3-4x2x6, complete each of the following [4 pt]:
A.) is a factor of the polynomial f(x).
B.)(-1,0) is an of the graph of f(x).
6.) Use synthetic division and the Remainder Theorem to find f(-2), given f(x)=3x4-5x3x-6.[6 pt]
6.
7.) Consider the function f(x)=2x3-3x29x20.
[9pt]
A.) List all the possible rational zeros for this function.
A
B.) Is 5 an upper bound of this function? Explain why or why not.
C.) Is -1 a lower bound of this function? Explain why or why not.
8.) Find all the zeros of f(x)=2x3-3x2-10x15 given that 32 is a zero. [7 pt]
9.) Solve
x4-2x2-16x-15=0.
[11pt]
10.) Write f(x) as the product of linear factors if the zeros of f
PLEASE ANSWER ALL QUESTIONS AND SHOW ALL WORK
Consider the function f ( x ) = x 4 - 3 x 3 - 2 0

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