## Calculus 10th Edition

Rolle's Theorem does not apply to the function because it is not continuous on the interval $[\pi, 3\pi]$
Begin by testing continuity of the function $f(\pi)=0$ $f(2\pi)=$ undefined because the function is undefined at a point in the interval, Rolle's Theorem does not apply to the function even though $f(a)= f(b)$