Question

sa se determine baza functiei logaritmice f:(0;+infinit) sageata R , f(x)=log in baza a x, in cazurile : f(2)=4 ; f(3)=1/2 cum se face

Answer 1

f (2) = 4 => log(a) 2 = 4 => a^4 = 2 => a = radical de ordin 4 din 2; f (3) = 1/2 => log(a) 3 = 1/2 => a^(1/2) = 3 | ^2 => a = 3^2 = 9