Question

Sendo log7 2 = a e log7 3 = b. Calcule os logaritmos em função de
a e b.
a) log4 14 =

b) log6 42=
RAPIDO PFV A\

Answer 1

a) log4 14

log7 14/log7 4

log7 (2*7)/log7 (2²)

log7 2 + log7 7/2*log7 2

a+1/2*a

a+1/2a

b) log6 42

log7 42/log7 6

log7 (2*3*7)/log7 (2*3)

log7 2 + log7 3 + log7 7/log7 2 + log7 3

a+b+1/a+b