X+4y=9/x

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Solution for X+4y=9/x equation: 


D( x )

x = 0

x = 0

x = 0

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

X+4*y = 9/x // - 9/x

X-(9/x)+4*y = 0

X-9*x^-1+4*y = 0

-9*x^-1 = -(X+4*y) // : -9

x^-1 = (X+4*y)/9

-1 < 0

1/(x^1) = (X+4*y)/9 // * x^1

1 = x^1*((X+4*y)/9) // : (X+4*y)/9

9*(X+4*y)^-1 = x^1

x = 9*(X+4*y)^-1

x = 9*(X+4*y)^-1

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