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D( x )
-6*x^3*y = 0
x = 0
36*x = 0
18*y^-2 = 0
18*x^-2*y = 0
-6*x^3*y = 0
-6*x^3*y = 0
-6*x^3*y = 0 // : -6*y
x^3 = 0
x = 0
x = 0
x = 0
36*x = 0
36*x = 0
36*x = 0 // : 36
x = 0
18*y^-2 = 0
18*y^-2 = 0
18*y^-2 = 0
x należy do R
18*x^-2*y = 0
18*x^-2*y = 0
18*x^-2*y = 0 // : 18*y
x^-2 = 0
x należy do O
x belongs to the empty set
(((-4*x^7*((3*x^2*y^2)/(-6*x^3*y))*y^-2)/(18*x^-2*y))/(36*x))/(18*y^-2) = 0
x belongs to the empty set
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