Let `f(x) = cos xsin 2x ,` then

Let f(x) =cos x sin 2x , then :

Let f(x)=cos x sin2x, then

Let f(x)=cos x sin2x then

Let f (x) = sin x - cos x. Then the value of lim _( x to pi/2) ""(f (x)- f ((pi)/(2)))/(x - (pi)/(2)) is

If f(0) = 2 , and f(x) = (1-cos kx)/(x.sin x) , x != 0 , is continuous at x = 0 , then : k =

Let f(x) =cos^(-1) 2x. Then dom (f )=?

Let the function f : R to R be defined by f(x)= 2x + cos x , then f(x)-

Let, f: R rarr R be defined by f(x) = 2x + cos x, then f

"Let f(x) "=|{:(cos x" " sin x" " cos x),(cos 2x" "sin 2x" "2cos 2x),(cos 3x" "sin 3x" "3cos 3x):}|" Then find the vlue of "f'(0) and f'(pi//2).

"Let f(x) "=|{:(cos x" " sin x" " cos x),(cos 2x" "sin 2x" "2cos 2x),(cos 3x" "sin 3x" "3cos 3x):}|" Then find the vlue of "f'(0) and f'(pi//2).