What is the rate of change for f(x)=-2cos4x-3 on the interval from x=0 to x=pi over 4

Step-by-step explanation:

The average rate of a function on interval to is:

.

and here for this problem where .

So we will need to evaluate for .

To find we will replace in with :

To find we will replace in with :

So now we need to compute the change in over the change in :

Dividing by is the same as multiplying by :

could u provide us some answer choices or hmm idk maybe a table for us to anser with ? ?