3/x^2-3x

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Solution for 3/x^2-3x equation: 


D( x )

x^2 = 0

x^2 = 0

x^2 = 0

1*x^2 = 0 // : 1

x^2 = 0

x = 0

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

3/(x^2)-(3*x) = 0

3/(x^2)-3*x = 0

3*x^-2-3*x^1 = 0

(3*x^0-3*x^3)/(x^2) = 0 // * x^4

x^2*(3*x^0-3*x^3) = 0

x^2

3-3*x^3 = 0

{ 1, -1, 3, -3 }

1

x = 1

3-3*x^3 = 0

1

x-1

-3*x^2-3*x-3

3-3*x^3

x-1

3*x^3-3*x^2

3-3*x^2

3*x^2-3*x

3-3*x

3*x-3

0

-3*x^2-3*x-3 = 0

DELTA = (-3)^2-(-3*(-3)*4)

DELTA = -27

DELTA < 0

x in { 1} 

x = 1

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