Czy jeżeli log3=a i log5=b, to log 375=3ab?
Kasia: Czy jeżeli log3=a i log5=b, to log375=3ab?
16 sty 20:17
Jack: hm, chyba niezbyt...
16 sty 20:19
Jack: log 375 = log (25 * 15) = log(25 * 3 * 5) = log 25 + log 3 + log 5 =
= log 52 + log 3 + log 5 = 2 log 5 + log 3 +log5 = 2b + a + b = 3b + a
16 sty 20:21