Question

Cat inseamna 10 la puterea -11?

Answer 1

inseamna 1 supra 10 la puterea -11
adica

$10^{-11} = \frac{1}{ 10^{11} }$

iar ca regula generala: 

[tex] x^{-y} = \frac{1}{x^{y}} [/tex]