Question

se log23=k entao log49 é:

a)2k
b)k2
c)k
d)k3
e)k/2

Answer 1

R.: Letra C.

Log 3 = k

2

Log 9 = Log 3^2

4 2^2

Log 9 = 2 log 3

4 2^2

Log 9 1/2 × 2 Log 3

4 2

Log 9 = log 3

4 2

Ou seja , log 3 = k

2