ln(2.8/x)=2.79

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Solution for ln(2.8/x)=2.79 equation: 


D( x )

x = 0

2.8/x <= 0

x = 0

x = 0

2.8/x <= 0

2.8/x <= 0

2.8*x^-1 <= 0

2.8*x^-1 <= 0 // : 2.8

x^-1 <= 0/2.8

x^-1 <= 0

1/(x^1) <= 0

x <> 0

1/(x^1) <= 0 // * x^2

(x^2)/(x^1) <= 0

x^1 <= 0

x <= 0

x in (-oo:0)

x in (0:+oo)

ln(2.8/x) = 2.79 // - 2.79

ln(2.8/x)-2.79 = 0

ln(2.8/x)-2.79 = 0 // + 2.79

ln(2.8/x) = 2.79

ln(2.8/x) = ln(e^2.79)

2.8/x = e^2.79

2.8/x-e^2.79 = 0

2.8*x^-1 = e^2.79 // : 2.8

x^-1 = 0.35714286*e^2.79

-1 < 0

1/(x^1) = 0.35714286*e^2.79 // * x^1

1 = 0.35714286*e^2.79*x^1 // : 0.35714286*e^2.79

2.79999998*e^-2.79 = x^1

x = 2.79999998*e^-2.79

x = 2.79999998*e^-2.79

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