1. Consider the general equation of a quadratic f (x) = ax? + bx + c (Recall: a, b, function: and C represent constants).

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Consider the general equation of a quadratic function
1. Consider the general equation of a quadratic
f (x) = ax? + bx + c
(Recall: a, b,
function:
and C represent constants).
Please address each of the following questions:
a. Use the derivative J (") to find the critical value
f (x)
of
in terms of a and 6 (does this formula
look familiar?)
b. Use the second-derivative test to show that the
critical value is a local maximum if a < 0 or a local
minimum if a > 0.
f (x)
c. What determines whether the graph of
is
concave up or concave down?
f (x)
d. Does the graph of J (*)
points? Explain.
have any inflection
Transcribed Image Text:1. Consider the general equation of a quadratic f (x) = ax? + bx + c (Recall: a, b, function: and C represent constants). Please address each of the following questions: a. Use the derivative J (") to find the critical value f (x) of in terms of a and 6 (does this formula look familiar?) b. Use the second-derivative test to show that the critical value is a local maximum if a < 0 or a local minimum if a > 0. f (x) c. What determines whether the graph of is concave up or concave down? f (x) d. Does the graph of J (*) points? Explain. have any inflection
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