period of `cos(x+x/3+x/3^2+....)` is

The period of cos(x+2x+3x+.....+nx) is

period of cos(x+2x+3x+.........+nx) is

The period of cos^(3) x is

find the period of sin (x/2)-cos(x/3) is

find the period of sin (x/2)-cos(x/3) is

Period of cos(x+2x + 3x +…+n x) is

Period of 5+3cos^(2)x is

Statement - I : Period of cos^(3) x + cos^(3) (120^(0) - x) + cos^(3) (120^(0) + x ) is (pi)/(3) Statement -II : Period of cos((2pi x)/ 3 ) + sin((pix)/2) - tan ((pi x )/ 4) is 12 Which of the above statement is correct.

The period of cos x cos(pi//3 +x) cos(pi//3-x) is