Step 1:

The function is $\"\"$ , $\"\"$ .

Rolle $\"\"$ s Theorem :

Let $\"\"$ be a function that satisfies the following three hypotheses.

1. $\"\"$ is continuous on $\"\"$ .

2. $\"\"$ is differentiable on $\"\"$ .

3. $\"\"$ .

Then there is a number $\"\"$ in $\"\"$ such that $\"\"$ .