Need solution for RD Sharma math class 12 chapter Mean value theorem exercise 14 point 1 question 3 sub question (iii)
, so there exists
We know that cosine function is continuous and differentiable on R.
Let’s find the value of the function at an extreme
We know that
We have , so there exists
Let’s find the derivative of f(x)
Hence, Rolle’s Theorem is verified