2b-22/b-11

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Solution for 2b-22/b-11 equation: 


D( b )

b = 0

b = 0

b = 0

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

2*b-(22/b)-11 = 0

2*b-22*b^-1-11 = 0

2*b^1-22*b^-1-11*b^0 = 0

(2*b^2-11*b^1-22*b^0)/(b^1) = 0 // * b^2

b^1*(2*b^2-11*b^1-22*b^0) = 0

b^1

2*b^2-11*b-22 = 0

2*b^2-11*b-22 = 0

DELTA = (-11)^2-(-22*2*4)

DELTA = 297

DELTA > 0

b = (297^(1/2)+11)/(2*2) or b = (11-297^(1/2))/(2*2)

b = (3*33^(1/2)+11)/4 or b = (11-3*33^(1/2))/4

b in { (11-3*33^(1/2))/4, (3*33^(1/2)+11)/4} 

b in { (11-3*33^(1/2))/4, (3*33^(1/2)+11)/4 }

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