X^7y^-4/x^-7y^-4

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Solution for X^7y^-4/x^-7y^-4 equation: 


D( x )

x = 0

x^-7 = 0

x = 0

x = 0

x^-7 = 0

x^-7 = 0

1*x^-7 = 0 // : 1

x^-7 = 0

x należy do O

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

((X^7*y^-4)/(x^-7))*y^-4 = 0

X^7*x^7*y^-8 = 0 // : X^7*y^-8

x^7 = 0

x = 0

x in { 0} 

x belongs to the empty set

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