# What are the points of inflection, if any, of #f(x) = 4x^6 +4x^5 -5x^4 #?

##### 1 Answer

Apr 23, 2016

#### Explanation:

Let's find the second derivative...

There it is, the second derivative. How about we set the second derivative equal to zero...

Do some analysis of these points, just to make sure. You'll be glad you did that, for your answers are...