Question

Calculati media arimetica a numerelor 2, -1 si 1 supra 2

Answer 1

$m.a.\Big(2,-1,\dfrac{1}{2}\Big) = \dfrac{2-1+\dfrac{1}{2}}{3} = \dfrac{1+\dfrac{1}{2}}{3} = \dfrac{\dfrac{3}{2}}{3} = \dfrac{3}{2}\cdot \dfrac{1}{3} = \dfrac{1}{2}$