Question

Logarítmo!? Adotando log 2=0,3 e ln 10=2,3 , calcule ln 8.

Answer 1

Oi 

log(2) = 0.3
log(8) = 3log(2) = 0.9 


ln(8)/log(8) = ln(10)/log(10) = 2.3

ln(8) = 2.3*log(8) = 2.3*0.9 = 2.07