(8x^7/y)^-2

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Solution for (8x^7/y)^-2 equation: 


D( x )

(8*x^7)/y = 0

(8*x^7)/y = 0

(8*x^7)/y = 0

8*x^7*y^-1 = 0 // : 8*y^-1

x^7 = 0

x = 0

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

((8*x^7)/y)^-2 = 0

1/64*x^-14*y^2 = 0 // : 1/64*y^2

x^-14 = 0

x należy do O

x belongs to the empty set

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