(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

At which points on the curve y=1 + 40x^3 - 3x^5 does the tangent line have th largest slope?

2. Relevant equations

derivative is 120x^2-15x^4.....

3. 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?

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# Homework Help: Optimization question

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