Re: [計量] 問一下Big Book的數學
※ 引述《incessantgas (熱力四射)》之銘言：
: 1. d_1 rounded to the nearest thousandth.If d_0 = 0.34567, then d_1 = ?
d_1 = 0.346
: 2. For all real number a, let a*=1-a
: ((-1)*)* and 2*, which one id bigger?
: ans: the same
((-1)*)* = (1-(-1))* = 2*
: 3. Term X scored p points more than term Y, and the two terms together
: scores a total of 10 points.
: " Twice the number of term Y scored " and " 10-p "
: which one is bigger?
: ans: the same
X = Y + p → X - Y = p ....(a)
X + Y = 10 ....(b)
(b) - (a) → 2Y = 10 - p
: 感謝大家的回答.......
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