2a/a^-2

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Solution for 2a/a^-2 equation: 


D( a )

a^-2 = 0

a = 0

a^-2 = 0

a^-2 = 0

1*a^-2 = 0 // : 1

a^-2 = 0

a należy do O

a = 0

a = 0

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

(2*a)/(a^-2) = 0

2*a^3 = 0 // : 2

a^3 = 0

a = 0

a in { 0} 

a belongs to the empty set

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