A) \[\left\{ -\frac{\pi }{4},0,\frac{\pi }{4} \right\}\]
B) \[\left\{ -\frac{3\pi }{4},-\frac{\pi }{4},\frac{3\pi }{4},\frac{\pi }{4} \right\}\]
C) \[\left\{ -\frac{3\pi }{4},-\frac{\pi }{2},\frac{\pi }{2},\frac{3\pi }{4} \right\}\]
D) \[\left\{ -\frac{\pi }{2},-\frac{\pi }{4},\frac{\pi }{4},\frac{\pi }{2} \right\}\]
Correct Answer: B
Solution :
Here, \[y=\min [\sin x,\cos \,x]\]is not differentiable at \[\left\{ -\frac{3\pi }{4},\frac{\pi }{4} \right\}.\]You need to login to perform this action.
You will be redirected in
3 sec