1/2n-1/n^2

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Solution for 1/2n-1/n^2 equation: 


D( n )

n^2 = 0

n^2 = 0

n^2 = 0

1*n^2 = 0 // : 1

n^2 = 0

n = 0

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

(1/2)*n-(1/(n^2)) = 0

(1/2)*n-n^-2 = 0

1/2*n-n^-2 = 0

n*(1/2-n^-3) = 0

-1*n^-3 = -1/2 // : -1

n^-3 = 1/2

-3 < 0

1/(n^3) = 1/2 // * n^3

1 = 1/2*n^3 // : 1/2

2 = n^3

n^3 = 2 // ^ 1/3

n = 2^(1/3)

n = 0

n = 0

n in { 0} 

n = 2^(1/3)

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