एक फलन `f(x) ` इस प्रकार परिभाषित है की सभी x के लिए `[f(x)]^(n) =f (nx) ` तो सिद्ध कीजिये की
` " "f(x) f'(nx) =f '(x) f(nx)`

If (f(x))^(n) = f(nx) , find (f'(nx))/(f'(x)) .

A function f(x) is so defined that for all real x,{f(x)}^(n)=f(nx). Prove that f(x)f'(nx)=f'(x)f(nx)

f (x) = (cos x) ( cos 2x ) …( cos nx) implies f' (x) + sum ^(n) (r tan rx) f (x) =

If (f(x))^(n) =f(nx), then (f'(nx))/(f'(x)) is equal to ( where n in N)

Let f be a differentiable function satisfying [f(x)]^(n)=f(nx)" for all "x inR. Then, f'(x)f(nx)

Let f be a differentiable function satisfying [f(x)]^(n)=f(nx)" for all "x inR. Then, f'(x)f(nx)

Let f be a differentiable function satisfying [f(x)]^(n)=f(nx)" for all "x inR. Then, f'(x)f(nx)

If f(x)=(a-x^n)^(1/n) then find f(f(x))

Let f be a differentiable function satisfying [f(x)]^(n)=f(nx)" for all "x inR. Then, f'(x)f(nx) a. f(x) b. 0 c. f(x)f'(nx) d. none of these

Let f(n)=2 cos nx AA n in N , then f(1)f(n+1)-f(n) is equal to