Find the intervals on which the graph of f is concave upward, the intervals on which the graph of f is concave downward, and the inflection points. f(x)=x² +7x²

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
Question
Find the intervals on which the graph of f is concave upward, the intervals on which the graph of f is
concave downward, and the inflection points.
f(x)=x² +7x²
For what interval(s) of x is the graph of f concave upward? Select the correct choice below and, if necessary, fill in the
answer box to complete your choice.
A.
(Type your answer in interval notation. Type an exact answer. Use a comma to separate answers
as needed.)
B. The graph is never concave upward.
Transcribed Image Text:Find the intervals on which the graph of f is concave upward, the intervals on which the graph of f is concave downward, and the inflection points. f(x)=x² +7x² For what interval(s) of x is the graph of f concave upward? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. (Type your answer in interval notation. Type an exact answer. Use a comma to separate answers as needed.) B. The graph is never concave upward.
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