ln(3x)/x

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Solution for ln(3x)/x equation: 


D( x )

3*x <= 0

x = 0

3*x <= 0

3*x <= 0

3*x+0 <= 0 // - 0

3*x <= 0 // : 3

x <= 0/3

x <= 0

x = 0

x = 0

x in (0:+oo)

ln(3*x)/x = 0

ln(3*x)/x = 0 // * x

ln(3*x) = 0

ln(3*x) = ln(e^0)

3*x = e^0

3*x-e^0 = 0

3*x-1 = 0 // + 1

3*x = 1 // : 3

x = 1/3

x = 1/3

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