[理工] 機率 隨機變數

看板Grad-ProbAsk作者 (ㄏㄏ)時間10年前 (2013/09/28 19:38), 編輯推噓2(2推 0噓 5→)
留言7則, 3人參與, 最新討論串1/3 (看更多)
http://ppt.cc/M7Le 我想請問 在區間(a,a+2)和(a+2,b)的cdf 應該怎麼求? -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 122.117.9.7
推
09/29 00:33, , 1F
F(x)=P(X≦x) 慢慢積就好啦
09/29 00:33, 1F
→
09/29 00:34, , 2F
∫1/(b-2)dx from 0 to x = x/(b-2)
09/29 00:34, 2F
→
09/29 00:35, , 3F
∫1/(b-2)dx from 0 to a = a/(b-2)
09/29 00:35, 3F
→
09/29 00:36, , 4F
∫1/(b-2)dx from 0 to a + ∫1/(b-2)dx from a+2 to x
09/29 00:36, 4F
→
09/29 00:36, , 5F
= (x-2)/(b-2) 我沒仔細算 純粹抄你給的解答
09/29 00:36, 5F
→
09/29 10:58, , 6F
感謝解答^_^
09/29 10:58, 6F
推
09/29 12:13, , 7F
這題建議你把圖畫出來 一切會豁然開朗
09/29 12:13, 7F
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文章代碼(AID): #1IHh-v9K (Grad-ProbAsk)