- #1
erjkism
- 54
- 0
Homework Statement
At which points on the curve y=1 + 40x^3 - 3x^5 does the tangent line have th largest slope?
Homework Equations
derivative is 120x^2-15x^4...
The Attempt at a Solution
how should i do this? start by setting the derivative equal to zero to find critical #s, but then what?