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b in (-oo:+oo)
16^3*b = 1/8 // - 1/8
16^3*b-(1/8) = 0
16^3*b-1/8 = 0
4096*b-1/8 = 0 // + 1/8
4096*b = 1/8 // : 4096
b = 1/8/4096
b = 1/32768
b = 1/32768
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