Wat is a periodic wave function?

What is wave function ? Give general form of wave function. What is a periodic function?

If f(x) is a periodic function of the period k then f(ax+b) is a periodic function of the period_____.

Prove that the derivative of a periodic function of period T is a periodic function of period T.

If f(x + 2a) =f(x - 2a), then f(x) is a)a periodic function with period 4a b)a periodic function with period 2a c)a periodic function with indeterminate period d)a non periodic function

If f is a periodic function and g is a non-periodic function , then

If f is a periodic function and g is a non-periodic function , then

Is' the derivative of a periodic function periodic?

Let f(x)=nx + n-[nx + n]+tan((pix)/ 2) , where 9, [x] is the greatest integers function le x and n in N.It is 1) a periodic function of period1 2) a periodic function of period 4 3) not periodic 4) a periodic function of period 2