(1-3ln(x))/x^4

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Solution for (1-3ln(x))/x^4 equation: 


D( x )

x^4 = 0

x <= 0

x^4 = 0

x^4 = 0

1*x^4 = 0 // : 1

x^4 = 0

x = 0

x <= 0

x in (0:+oo)

(1-(3*ln(x)))/(x^4) = 0

(1-3*ln(x))/(x^4) = 0

(1-(3*ln(x)))/(x^4) = 0 // * x^4

1-(3*ln(x)) = 0

1-3*ln(x) = 0

1-3*ln(x) = 0 // - 1

-3*ln(x) = -1 // : -3

ln(x) = -1/(-3)

ln(x) = 1/3

ln(x) = ln(e^(1/3))

x = e^(1/3)

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