14x^-1y^-3/21x^-5

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Solution for 14x^-1y^-3/21x^-5 equation: 


D( x )

x = 0

x = 0

x = 0

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

x^-5*((14*x^-1*y^-3)/21) = 0

2/3*x^-6*y^-3 = 0 // : 2/3*y^-3

x^-6 = 0

x naleu017Cy do O

x belongs to the empty set

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