Paul M. answered • 12/09/19

Learn "how to" do the math and why the "how to" works!

f'(x)=3x^{2}-18x

and f"(x)=6x-18

The possible critical points are x=0 and x=6

You answer part c! And if you are unsure, graph the original equation.

Katie Q.

asked • 12/09/19Consider the function f(x)=x^{3}-9x^{2}.

a. Find a formula for f'(x).

b. Use your answer to part (a) to find any critical points of f.

c. Use either the first or second derivative test to classify any critical points from part (bO as either a local min or a local max. explain your reasoning so that the use of the first or second derivative is clear.

Follow
•
1

Add comment

More

Report

Paul M. answered • 12/09/19

Learn "how to" do the math and why the "how to" works!

f'(x)=3x^{2}-18x

and f"(x)=6x-18

The possible critical points are x=0 and x=6

You answer part c! And if you are unsure, graph the original equation.

Ask a question for free

Get a free answer to a quick problem.

Most questions answered within 4 hours.

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.