(a) Verify Rolle's theorem for : $f(x) = e^x(\sin x - \cos x)$ in $\l…
Previous year question for Engineering Mathematics-I.
Question
(a) Verify Rolle's theorem for : $f(x) = e^x(\sin x - \cos x)$ in $\left[\frac{\pi}{4}, \frac{5\pi}{4}\right]$.
(b) Find the extreme values of the function $\cos x \cdot \cos y \cdot \cos z$, where $x + y + z = \pi$.
- Year: 2018
- Subject: Engineering Mathematics-I