Question

sabendo que log2 20=a e log3 20=b, calcule o valor de log5 6

Answer 1

log 6 / log 5
log20 (2 . 3) / log20 (20 : 4)
log20 2 + log20 3 - log20 20 - 2 . log20 2
1/a + 1/b - 1 - 2 (1/a)
1/a + 2/a + 1/b - 1