# Is #f(x)=cotx-e^xtanx# increasing or decreasing at #x=pi/6#?

##### 1 Answer

Feb 7, 2016

The function is decreasing.

#### Explanation:

To figure the increasing or decreasing nature of a function we can look at its derivative. If

If the

So, to differentiate the function:

The product rule was used in the differentiation.

Now putting our value of

Therefore as