作者查詢 / aegius1r
作者 aegius1r 在 PTT [ tutor ] 看板的留言(推文), 共26則
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40F推:了不起學一下直立式開方 還可以直接用算的09/13 13:45
1F推:kt^2-4kt+16恆正 => k>0且(4k)^2-4*k*16<0 => 0<k<411/04 13:34
3F推:說真的 方塊一點都不數學..10/15 18:32
8F推:4F請確定一下有沒有純數學方法找出最少步數的10/16 23:21
9F→:WCA比賽中的FM 也是以各種方法去嘗試 非關數學10/16 23:22
10F→:當然有些跟數學有關 EX. 盲解中cycle概念 但要玩到很後期10/16 23:22
11F推:我想我該修正說法 不是方塊跟數學無關 而是不要期待學生10/16 23:27
12F→:玩了方塊數學就會有怎樣的進步..10/16 23:28
5F推:原兩直線上選一條取一個點 判斷該點到兩角平分線距離10/10 11:03
7F→:阿不好意思我看錯了@ @10/10 18:09
5F推:設f(x)=(x-1)(x-2)q(x)+a(x-1)+410/05 22:16
3F推:把七個一 分給三個數字09/28 13:07
1F推:#1CP0u0HL (Math) 及相關討論串09/05 16:16
3F推:除法原理08/30 14:54
3F推:x^4+4x^2+4-4x^2 = (x^2+2x+2)(x^2-2x+2)07/18 22:29
4F→:兩個括弧相乘 => P*1 or(-1)*(-P)07/18 22:30
5F推:然後答案只有1,-1 (直接代入5找出的629 = 17*37)07/18 22:34
8F推:的確這兩個恆正所以(-1)(-P)不用考慮@@07/19 09:26
9F→:但是換做其他數字就有可能有解 所以最多會有四個解07/19 09:26
10F推: ''想錯了 這句不對 ^^^^^^^^^^^^^^^^^^07/19 09:43
14F推:最多是八個解 兩個二次方程式各配1 -1下去解07/19 10:01
15F→:然而還得入驗證是否為質數 所以找到的也不一定為解07/19 10:02
16F→: ^代07/19 10:02