Static vs. non-static method

Question

Suppose you have some method that could be made static, inside a non-static class.
For example:

private double power(double a, double b)
    {
        r         


        

Answer 1

There should be a slight performance improvement if you declare the method static, because the compiler will emit a call IL instruction instead of callvirt.

But like the others said, it should be static anyway, since it is not related to a specific instance