:) zocha: Liczba log ₇2 – log₇ 98 wynosi: A) 7 B) – 2 C) 1 D) – 1

morfepl: B)log₇²₉₈=−2

Tysia :): log 2 − log 98 = log (2/98) = log (1/49) 1/49 to inaczej 49 ⁻1 zatem log (1/49) = log 49⁻1 = −1 log 49 log 49 = 2 zatem −1 log 49 = −2