(2x^-1y^-4z^-7/10x^-2y^-6z)^-1

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Solution for (2x^-1y^-4z^-7/10x^-2y^-6z)^-1 equation: 


D( x )

x = 0

x^-2*y^-6*((2*x^-1*y^-4*z^-7)/10)*z = 0

x = 0

x = 0

x^-2*y^-6*((2*x^-1*y^-4*z^-7)/10)*z = 0

x^-2*y^-6*((2*x^-1*y^-4*z^-7)/10)*z = 0

1/5*x^-3*y^-10*z^-6 = 0 // : 1/5*y^-10*z^-6

x^-3 = 0

x należy do O

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

(x^-2*y^-6*((2*x^-1*y^-4*z^-7)/10)*z)^-1 = 0

5*x^3*y^10*z^6 = 0 // : 5*y^10*z^6

x^3 = 0

x = 0

x in { 0} 

x belongs to the empty set

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