4/x=y

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Solution for 4/x=y equation: 


D( x )

x = 0

x = 0

x = 0

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

4/x = y // - y

4/x-y = 0

4*x^-1 = y // : 4

x^-1 = y/4

-1 < 0

1/(x^1) = y/4 // * x^1

1 = x^1*(y/4) // : y/4

4*y^-1 = x^1

x = 4*y^-1

x = 4*y^-1

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