The range of `f(x) = cos x - sin x` is

The range of f(x)=5cos x-12 sin x+7 is

Range of f(x) = 5 cos x-3 sin x+2 is

IF [5 sin x]+ [cos x]+6=0, then range of f(x)=sqrt3 cos x + sin x corresponding to solution set of the given equation is: (where [.] denotes greatest integer function)

IF {5 sin x]+ [cos x]+6=0, then range of f(x)=sqrt3 cos x + sin x corresponding to solution set of the given equation is: (where [.] denotes greatest integer function)

The range of f(x)=(1)/(3cos x-4sin x+6) is

Range of f(x)=2cos^(2)x+sin x-8 is

Find the range of f(x)=cos^4x+sin^2x-1 .