(2x^9/y)^-2

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Solution for (2x^9/y)^-2 equation: 


D( x )

(2*x^9)/y = 0

(2*x^9)/y = 0

(2*x^9)/y = 0

2*x^9*y^-1 = 0 // : 2*y^-1

x^9 = 0

x = 0

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

((2*x^9)/y)^-2 = 0

1/4*x^-18*y^2 = 0 // : 1/4*y^2

x^-18 = 0

x należy do O

x belongs to the empty set

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