If `f(x)=cosxcos2xcos4xcos8xcos16x` then

intcos2xcos4xdx

intcos2xcos4xdx

intsinxcosxcos2xcos4xdx

inte^(x)sinxcosxcos2xcos4xdx

inte^(x)sinxcosxcos2xcos4xdx

Let I=int_0^(10pi) (cos6xcos7xcos8xcos9x)/(1+e^(2sin^3 4x))dx Now answer the question: If I=k int_0^(pi/2) cos6xcos7xcos8xcos9xdx , then k = (A) 5 (B) 10 (C) 20 (D) none of these

Let I=int_0^(10pi) (cos6xcos7xcos8xcos9x)/(1+e^(2sin^3 4x))dx Now answer the question:If I=k int_0^(pi/2) cos6xcos7xcos8xcos9xdx , then k = (A) 5 (B) 10 (C) 20 (D) none of these

Find the fundamental period of f(x)=cosxcos2xcos3xdot

Find the fundamental period of f(x)=cosxcos2xcos3xdot