Verify Lagrange’s mean-value theorem for the following function:
Given:
Since (sin x + cos x) is a continuous as well as differentiable function in the interval 
.
=0
f' (c)=cos x-sin x
⇒ cos x-sin x=0
1
Verify Lagrange’s mean-value theorem for the following function:
Given:
Since (sin x + cos x) is a continuous as well as differentiable function in the interval .
=0
f' (c)=cos x-sin x
⇒ cos x-sin x=0