2b-256/b^2

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Solution for 2b-256/b^2 equation: 


D( b )

b^2 = 0

b^2 = 0

b^2 = 0

1*b^2 = 0 // : 1

b^2 = 0

b = 0

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

2*b-(256/(b^2)) = 0

2*b-256*b^-2 = 0

2*b-256*b^-2 = 0

2*b*(1-128*b^-3) = 0

-128*b^-3 = -1 // : -128

b^-3 = 1/128

-3 < 0

1/(b^3) = 1/128 // * b^3

1 = 1/128*b^3 // : 1/128

128 = b^3

b^3 = 128 // ^ 1/3

b = 4*2^(1/3)

2*b = 0

2*b = 0 // : 2

b = 0

b in { 0} 

b = 4*2^(1/3)

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