Concept explainers
To verify: the upper and lower bound of given polynomial function using synthetic division method.
To find: - the real zeros of function.

Answer to Problem 61CR
Explanation of Solution
Given information:
Concept used:-
Upper bound:- A number “a” (a>0)is called upper bound of real zeros of polynomial function f(x) if we divide polynomial function f(x) by (x-a) using synthetic division and we get all numbers in bottom either positive or zero.
Lower bound: - A number “a” (a>0) is called Lower bound of real zeros of polynomial function f(x) if we divide polynomial function f(x) by (x-a) using synthetic division and we get all numbers in alternate sign in bottom.
Calculation: -
When x = 1 and
Hence, by definition of upper bound, x = 1 is upper bound of f(x).
At
Hence, x =
Now, we find real zeros of function
Real zeros of function is
Chapter 2 Solutions
EP PRECALC.GRAPHING APPR.-WEBASSIGN-1YR
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