Question

calcule os seguintes logaritmos:a) log 5 1b)log 2 √8c) log 2 16d) log 1/5 625e) log 2 √64 d) log 1/4 16

Answer 1

Ola Esteigab

a) log5(1) = 0

b) log2(√8) = log(2^3)/2 = 3/2 

c) log2(16) = log2(2^4) = 4

d) log1/5(625) = -log(5^4)log/5) = -4 

e) 

log2(√64) = log2(2^6)/2 = 6/2 = 3

f) 

log1/4(16) = -log(16)/log(4) = -log(2^4)/log/2^2) = -4/2 = -2