Question

Calcule pela definicao os seguintes logaritmos
Log9 3
Log 2 128
Log 5 625
Log 1/4 62

Answer 1

Log9 3 = n

9ⁿ = 3

3²ⁿ = 3¹ ==> n=1/2

Log 2 128 = n

2ⁿ=128

2ⁿ=2^7 ==> n=7

Log 5 625 = n

5ⁿ = 625

5ⁿ=5⁴ ==> n=4

Log 1/4 (64) = n

(1/4)ⁿ = 64

4-ⁿ = 4³

n = -3