If `f(x)=|cosx-sinx| `, then `f'(pi/4)` is equal to

A

`sqrt2`

B

`-sqrt2`

C

0

D

None of these

Verified by Experts

The correct Answer is:

D

Similar Questions

Explore conceptually related problems

If f(x) = |cos x| , then f'((pi)/(4)) is equal to …… 0 lt x lt (pi)/(2)

If f(x)= |cos x- sin x| , then f'((pi)/(3)) is equal to …….

If f(x)=|x|^(|sinx|) , then f'((pi)/(4)) equals

If f(x) = |cos x- sin x| then find f'((pi)/(6))

If f(x)=x sin x then f'(pi/2) = ……

If f(x) is given by f(x)=(cosx+i sinx)(cos3x+isin3x) ......... ....... [cos(2n-1)x+isin(2n-1)x] , then f''(x) is equal to

If y=f((2x-1)/(x^(2)+1)) and f^'(x)=sinx^(2) , then (dy)/(dx) is equal to

If f'(x)=sinx+sin4x.cosx, then f'(2x^(2)+pi/2) is

If y=log_(sinx)(tanx), then (dy)/ (dx) at x=(pi)/(4) is equal to