How to find period of this periodic function? How can I find a period of this function?
$$2\sin{3x} + 3\sin{2x}$$
Is here any way how to sum both sinuses?

One has period $\pi$ and the other has period $2\pi /3$. What you want now is to see when they "match up". This is obtained in $2\pi$. Basically, this is $3\times 2\pi/3$ and $2\times \pi$. We're just cross multiplying periods.
