If and be respectively the smallest and the largest values of in which satisfy the equation
then is equal to:
Explanation for the correct option.
Step 1. Find the solutions of the equation.
Let's consider the given function
So either or . But is not possible.
So for the values of for which are and .
Step 2. Find the value of the integral.
The integral limit has been found so it can be evaluated as:
Hence, the correct option is B.