If `f(x)=e^(x-[x]+|cos pi x|+|cos2 pi x|+...+|cos npi x|)` then the period of `f(x)` is

If f(x)=e^(x-[x]+|cos pi x|+|cos2 pi x|+...+|cos n pi x|) then the period of f(x) is

The period of the function f(x)=e^(x-[x]+|cos pi x|+|cos2 pi x|+...|cos n pi x|) is

The period of f(x)=cos2x+2cos x+1 is

Let f be a function defined on [-(pi)/(2), (pi)/(2)] by f(x) = 3 cos^(4) x-6 cos^(3) x - 6 cos^(2) x-3 . Then the range of f(x) is

If f(x)=|cos x-sin x|* then f((pi)/(4)) is

If f(x)=cos x cos2x cos4x cos8x cos16x then f'((pi)/(4)) equals

If f(x)=cos x+sin x, find f((pi)/(2))

The least period of the function f(x)=cos(cos x)+sin(cos x)+sin4x is (k pi)/(2), then the value of k is