ln(7/x)=56.626

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Solution for ln(7/x)=56.626 equation: 


D( x )

x = 0

7/x <= 0

x = 0

x = 0

7/x <= 0

7/x <= 0

7*x^-1 <= 0

7*x^-1 <= 0 // : 7

x^-1 <= 0/7

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(7/x) = 56.626 // - 56.626

ln(7/x)-56.626 = 0

ln(7/x)-56.626 = 0 // + 56.626

ln(7/x) = 56.626

ln(7/x) = ln(e^56.626)

7/x = e^56.626

7/x-e^56.626 = 0

7*x^-1 = e^56.626 // : 7

x^-1 = (e^56.626)/7

-1 < 0

1/(x^1) = (e^56.626)/7 // * x^1

1 = ((e^56.626)/7)*x^1 // : (e^56.626)/7

7*e^-56.626 = x^1

x = 0

x in { 0} 

x belongs to the empty set

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