If `f(x)=sin^(6) x + cos^(6) x ` for ` x in R `, then f(x) lies in the interval

If f(x)=sin^(6)x+cos^(6)x, then range of f(x)

Let f be a twice differentiable function defined on R such that f(0) = 1, f'(0) = 2 and f '(x) ne 0 for all x in R . If |[f(x)" "f'(x)], [f'(x)" "f''(x)]|= 0 , for all x in R , then the value of f(1) lies in the interval:

If f(x)=sin^6x+cos^6x , then range of f(x) is

If f(x)=sin^6x+cos^6x , then range of f(x) is

If f(x)=sin^6x+cos^6x , then range of f(x) is

If f(x)=(cos^2x+sin^4x)/(sin^2 x+cos^4x), for x in R, then f(2002) is equal to