1. ## extreme values

Hello!

How can I find out the min and max for sin 3x + sin 5x?

thank you!

2. ## Re: extreme values

Originally Posted by ely_en
How can I find out the min and max for sin 3x + sin 5x?
If $a\ne 0$ then the min & max of $\sin(ax)$ are the same as for $\sin(x)~.$