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D( x )
7*a^4*b^4 = 0
12*x^4*y^4 = 0
35*a^2*b^4 = 0
7*a^4*b^4 = 0
7*a^4*b^4 = 0
7*a^4*b^4 = 0
x należy do R
12*x^4*y^4 = 0
12*x^4*y^4 = 0
12*x^4*y^4 = 0 // : 12*y^4
x^4 = 0
x = 0
35*a^2*b^4 = 0
35*a^2*b^4 = 0
35*a^2*b^4 = 0
x należy do R
x belongs to the empty set
(((6*x^3*y^5)/(35*a^2*b^4))/(12*x^4*y^4))/(7*a^4*b^4) = 0
x belongs to the empty set
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