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Czyli:
oraz
spr: 2⁻³ = 1/8
lub
log₂ 1/8=x
2^x = 1/8
2^x=2⁻³
x= -3
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log₄ 1/2=x
4^x=1/2 ^X - do potęgi x
(2²)^x=2⁻¹
2x=-1 I: 2
x = - 1/2