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作者 john790710 在 PTT [ Math ] 看板的留言(推文), 共25則
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1F推:第一本從矩陣開始,後面才交vector space02/22 22:16
2F→:第二本是先從vector space開始教起02/22 22:19
3F→:EECS通常是用第一本吧,比較好入門02/22 22:22
2F→:題目有兩行,他是問那個時域的積分02/22 17:32
7F推:不就3和202/20 22:51
8F→:抱歉,沒看到複數02/20 22:53
9F推:用x=5-y代入,有兩根3和2,用公式解另兩根02/20 23:04
10F→:5/2 +- [i*(151)^1/2]/202/20 23:05
1F推:1.對角線為直徑,一半的周長d(sint+cost)02/16 22:39
2F→:2.算幾不等式02/16 22:41
4F→:2.面積A,邊長L1=x,L2=A/x,(L1+L2)/2>=(L1*L2)^0.502/16 22:51
5F→:(L1+L2)/2>=(A)^0.5所以L1=L2=(A)^0.5=x為等於02/16 22:53
6F→:這時候最小02/16 22:54
4F推:a=2.189 or 0.45802/16 00:03
1F→:你條件有沒有少給?只有給AB和AC嗎?02/15 23:51
3F→:積不出的那個印象中要乘e^(-y^2)然後再換成rdrd角度07/06 23:20
5F→:不過那是0~無限,不確定範圍會不會變07/06 23:21
6F推:我用三角函數,角cab大概78度,面積大概22.87~23左右06/28 23:58
7F→:國中的答案應該會很漂亮,不知道有沒有算錯06/28 23:59