Solve `cosxcos2xcos3x=1/4`

Find the fundamental period of f(x)=cosxcos2xcos3xdot

Prove that 1+cos2x+cos4x+cos6x=4cosxcos2xcos3x .

Evaluate: intsinxcosxcos2xcos4xcos8xdx

Let f(x)=|secxcosxsec^2x+cotxcos e cxcos^2xcos^2x cos e c^2x1cos^2xcos^2x| Prove that int_0^(pi/2)f(x)dx=-pi/4-8/(15)

Solve |3x-2|<4.

Solve |1+3/x|>2

Solve: 4x-7(2-x)=3x+2

Solve for x :4^x-3^(x-1/2)=3^(x+1/2)-2^(2x-1)

Solve |x^2+4x+3|=x+1