作者查詢 / sendicmimic
作者 sendicmimic 在 PTT [ Math ] 看板的留言(推文), 共72則
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3F→: 在想說會不會是用因數分解去討論,不然integer多餘.12/03 18:42
5F→: 跟一樓講的是一樣的只是角度有變12/01 19:15
6F→: 輔助線一條很簡單,兩條就有困難,三條就想破頭啦!12/01 19:16
8F推: 函數的奇偶性是在x和f(x)都有加法inverse的前提所設11/30 17:31
9F→: 也就是有x就存在-x, 有f(x)就存在-f(x),否則沒意義11/30 17:35
10F→: 因為奇偶性就是在討論某些對稱關係的11/30 17:37
5F→: 題目好奇怪,讓人無法理解,也是直覺想到三樓的問題12/01 01:48
3F→: 第二題先不要代進去算,x/y + y/x = x^2+y^211/27 22:14
4F→: x^2 + y^2 = (x+y)^2 - 2,這時再代進去算,很快11/27 22:15
5F→: 利用xy=1的偷吃步11/27 22:16
4F→: 沒辦法學以致用才是問題吧,趕快投入業界才是11/24 16:15
3F推: x 軸與圓有無交點不是很直觀,圓心(a,1)半徑1剛好.11/21 06:05
10F→: 我認為這是設計題目的盲點11/18 01:49
11F→: 一般題目結構多是給定P前提,要解題者把結果Q找出來11/18 01:50
12F→: 題目與條件是P,選項都是需要推得的Q,這樣才有意義11/18 01:52
13F→: 選項中如果再多加條件就會變成原PO問的狀況11/18 01:54
14F→: 這樣子就沒有解題意義,知道選項C的PR不會大於7就好11/18 01:56
20F→: 三角函數不是都先理解完,然後背嗎? =_=11/16 16:25
21F→: 哪有閒功夫每個題目都在那邊重頭導11/16 16:26
22F→: 從11/16 16:26