[tex]\boxed{M_{a}= \frac{a+b}{2} } \\ \\ \boxed{M_g= \sqrt{a*b} } \\ \\ \boxed{M_{arm}= \frac{n}{ \frac{1}{x_1}+ \frac{1}{x_2}+...+ \frac{1}{x_n} } } } \\ \\\ M_a = \text{media aritmetica } \\ M_g= \text{media geometrica } \\ M_{arm} =\text{media armonica }[/tex]
