# Is #f(x)=e^x+cosx^2# increasing or decreasing at #x=pi/6#?

##### 1 Answer

Dec 27, 2015

Increasing.

#### Explanation:

Find the sign of

Find

Use the chain rule to find the next derivative.

So,

Thus,

Since

graph{e^x+cos(x^2) [-10.25, 15.05, -4.4, 8.26]}