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D( b )
b = 0
b = 0
b = 0
b in (-oo:0) U (0:+oo)
22.6/b = 10/100 // - 10/100
22.6/b-(10/100) = 0
22.6/b-1/10 = 0
22.6*b^-1 = 1/10 // : 22.6
b^-1 = 0.00442478
-1 < 0
1/(b^1) = 0.00442478 // * b^1
1 = 0.00442478*b^1 // : 0.00442478
225.99993672 = b^1
b = 225.99993672
b = 225.99993672
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