y=-x/x^2-7

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Solution for y=-x/x^2-7 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)

y = -x/(x^2)-7 // + -x/(x^2)-7

y-(-x/(x^2))+7 = 0

x^-1+y+7 = 0

1*x^-1 = -(y+7) // : 1

x^-1 = -(y+7)

-1 < 0

1/(x^1) = -(y+7) // * x^1

1 = x^1*(-(y+7)) // : -(y+7)

-(y+7)^-1 = x^1

x = (y+7)^-1

x = (y+7)^-1

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