logar. sinus: Oblicz (zapisz w postaci jednego logarytmu): a) ln(x/y)+ln(y/x) b) ln(xyz)− ln(y²z) +ln(y/x) c) ln(x²y²)−ln x−ln y d)log₂ (8x)− log₂ (x²/16)

azeta: log_ab+log_ac=log_abc

	b
logab−logac=loga
	c

Adamm:

	xy
a) =ln		= ln1 =0
	xy

	xyz*y
b) =ln		= ln1 = 0
	y2zx

	x2y2
c) =ln		= ln(xy)
	xy

	8*16x		128
d) =log2(		)=log2(		)
	x2		x