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D( x )
((((((x^5)/3)*y^1)/3)*y^7)/4)/(x^-2) = 0
x = 0
x^-2 = 0
((((((x^5)/3)*y^1)/3)*y^7)/4)/(x^-2) = 0
((((((x^5)/3)*y^1)/3)*y^7)/4)/(x^-2) = 0
((((((x^5)/3)*y)/3)*y^7)/4)/(x^-2) = 0
1/36*x^7*y^8 = 0 // : 1/36*y^8
x^7 = 0
x = 0
x = 0
x = 0
x^-2 = 0
x^-2 = 0
1*x^-2 = 0 // : 1
x^-2 = 0
x należy do O
x in (-oo:0) U (0:+oo)
(((((((x^5)/3)*y^1)/3)*y^7)/4)/(x^-2))^-2 = 0
(((((((x^5)/3)*y)/3)*y^7)/4)/(x^-2))^-2 = 0
1296*x^-14*y^-16 = 0 // : 1296*y^-16
x^-14 = 0
x należy do O
x belongs to the empty set
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