Logarytmy: zad1. Oblicz xlog₅x= 2log₅ 3 - 1/2 log₅ 16
log₅x= log₅ 9 - log₅ 4
log₅x= log₅ 9/4
x=9/4zad2. log 1/2 (5-2x)= -1
1/2 (5-2x)= 10⁻¹
5/2-x=1/10
x=25/10-1/10
x=24/10
x=2,4
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Logarytmy:
zad1. Oblicz x
log₅x= 2log₅ 3 - 1/2 log₅ 16
log₅x= log₅ 9 - log₅ 4
log₅x= log₅ 9/4
x=9/4
zad2.
log 1/2 (5-2x)= -1
1/2 (5-2x)= 10⁻¹
5/2-x=1/10
x=25/10-1/10
x=24/10
x=2,4