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

##### 1 Answer

Jun 4, 2018

#### Explanation:

To figure out whether a function is increasing or decreasing at a certain point, we can take the function's derivative. If the derivative is positive, the function is increasing at that point, and if the derivative is negative, the function is decreasing at that point. If we take the derivative of this function using the quotient rule, we get