ln(4x/y)

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Solution for ln(4x/y) equation: 


D( x )

(4*x)/y <= 0

(4*x)/y <= 0

(4*x)/y <= 0

(4*x)/y = 0

4*x*y^-1 = 0 // : 4*y^-1

x = 0

x <= 0

	(-oo:0)	(0:+oo)
x	-	+


x in (0:+oo)

ln((4*x)/y) = 0

ln((4*x)/y) = ln(e^0)

(4*x)/y = e^0

(4*x)/y-e^0 = 0

4*x*y^-1-1 = 0 // + 1

4*x*y^-1 = 1 // : 4*y^-1

x = 1/(4*y^-1)

x = 1/(4*y^-1)

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