What must be true about the function `f(x)=log(2+cos3x)`?

The function f(x)=log x

Find the period of the function f(x) = log (2 + cos 3x)

What is the period of the function f(x) = ln (2 + sin^2 x) ?

I : Ever function must be either even or odd function The function f(x)=log(x+sqrt(x^(2)+1)) is an odd function.

Function f(x)=log(x^3+sqrt1+x^6) is

the domain of the function f(x)=log_(3+x)(x^(2)-1) is

Function f(x)=sin(ln x)-cos(ln x) is

The domain of the function f(x)=(log)_(3+x)(x^2-1) is

The domain of the function f(x)=(log)_(3+x)(x^2-1) is

The domain of the function f(x)=(log)_(3+x)(x^2-1) is