Hello, NAPA55!

Here's the last one . . .

First, find the derivative (Chain Rule, Quotient Rule, etc.)5. Find the area of the triangle formed by the three points

on the curve: . where the tangent lines are horizontal.

. .

Tangents are horizontal where

. . So we have: .

When

When

When

And surely you can find the area of this triangle . . .

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