Solution: Everyone knows that mosquitoes can't be as heavy as lions, which is a fact.

But after the mathematical formula evolved, mosquitoes became as heavy as lions, which must have hidden the mystery in the evolution process.

If you pay a little attention, you will find that the above formula 1 is wrong, because the arithmetic square root is not negative.

Then a2 = a (a ≥ 0)-a (a < 0), from the topic, it should be related: m < a < n.

M-a < 0，n-a > 0。

Then (m-a)2=-(m-a), (n-a) 2 = n-a.

So -(m-a)=n-a, or m+n=2a. In fact, the mathematical evolution of mosquitoes is spinning in place, and nothing has been proved.

Related content explanation

Mathematical definition of function: given a non-empty number set A, apply the corresponding rule F to A, and record it as f(A), and get another number set B, that is, B=f(A). Then this relationship is called functional relationship, or function for short.

Simply put, for two variables X and Y, if each given value of X has a unique definite value corresponding to it, then we say that Y is a function of X ... where X is called an independent variable and Y is called a dependent variable.