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h in (-oo:+oo)
17.5 = (1/(2^7))*h // - (1/(2^7))*h
17.5-((1/(2^7))*h) = 0
17.5-(2^-7*h) = 0
17.5-1/128*h = 0 // - 17.5
-1/128*h = -17.5 // : -1/128
h = -17.5/(-1/128)
h = 2240
h = 2240
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