Let the number of molecules be n and the speed of each molecule be v[i], sum and then take the arithmetic average:

V_=(v 1+v2+...+vn)/n, "1" shows that this has no computational significance.

For Maxwell distribution, find the integral ∫v*f(v)dv, and the integral limit is from 0 to infinity, divided by n "2".

Defined as "1" and "2" for calculation.

It is not difficult to prove that they are equivalent.