標題:
吾識計衣幾題數-口-'快
發問:
6: u2 - w2 = 2as 若u=7 , w=5 , a=3 求s 7: p = 12n{3次方} + 8m{5次方} - 17 / s 當m=2 , n=3 , p=563 , 求s 9:WT = (F+7)(F-7) 若W=5 , T = 3W / 5 ,求F 更新: 6: u2 - w2 = 2as 若u=7 , w=5 , a=3 求s 3: C = 5/9 (a-32) 若a = 59, 求 c 4: C = p (1+nr/100) 若p=1000,n=2 , r=3 , 求 c 更新 2: 第7,,9 題吾洗拉`
最佳解答:
u2﹣w2 = 2as 若u=7 , w=5 , a=3 72﹣52 = 2(3)s 49﹣25 = 6s 24 = 6s s = 24/6 s = 4 p = (12n3 + 8m5﹣17)/s 當m=2 , n=3 , p=563 563 = [12(3)3 + 8(2)5﹣17]/s 563s = 12(27)+8(32)﹣17 563s = 324+256﹣17 563s = 563 s = 1 WT = (F+7)(F﹣7) 若W=5 , T = 3W / 5 5(3W/5) = (F+7)(F﹣7) 3(5) = F2﹣72 15 = F2﹣49 64 = F2 F = ±8 2007-11-25 17:23:51 補充： C = 5/9 (a﹣32) 若a = 59, 求 c C = 5/9 (59﹣32) C = 5/9 (27) C = 135C = 15C = p (1+nr/100) 若p=1000,n=2 , r=3 , 求 cC = 1000[1+(2)(3)/100]C = 1000(1+ 6/100)C = 1000(1+ 3/50)C = 1000(53/50)C = 1060
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u2﹣w2 = 2as 若u=7 , w=5 , a=3 72﹣52 = 2(3)s 49﹣25 = 6s 24 = 6s s = 24/6 s = 4 p = (12n3 + 8m5﹣17)/s 當m=2 , n=3 , p=563 563 = [12(3)3 + 8(2)5﹣17]/s 563s = 12(27)+8(32)﹣17 563s = 324+256﹣17 563s = 563 s = 1 WT = (F+7)(F﹣7) 若W=5 , T = 3W / 5 5(3W/5) = (F+7)(F﹣7) 3(5) = F2﹣72 15 = F2﹣49 64 = F2 F = ±8|||||要計咩= = 用計數機ma得...
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