matematykaszkolna.pl
logu{1}{4} x= -2 lightban: log14 x= −2
22 mar 13:00
J:
 1 
= (
)−2 = ... ?
 4 
22 mar 13:02
Dziadek Mróz: a = logb(ba) loga(b) = loga(c) ⇔ b = c log1/4(x) = −2
 1 
log1/4(x) = log1/4((
)−2)
 4 
 1 
x = (
)−2
 4 
x = 42 x = 16
22 mar 13:31