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[考題] 99年高考工數的問題

Jun 25th 2014, 14:32, by yesyesyesyes

作者yesyesyesyes (@_@O)

看板Examination

標題[考題] 99年高考工數的問題

時間Wed Jun 25 14:31:55 2014

最近在寫考古題機率一直是我的弱項懇請各位幫解惑 ------------------------ 99年高考三級選擇第17題兩連續隨機變數 X 、 Y 之結合機率密度函數...............(略) 求P(X+Y>1)=? Y的上下限是 1-X 到 X 但是X的上下限是怎麼看的謝謝 -- -- ◢███◣ ▃▄▅▆ ◥◣ ▆▅▅▄▅ ◢ ▋ ◥◣ ◢███◣◣◣◣ ▊ ▅▇█▅▄ █ █▅▋▊▂ █▇██▇ █▍███▄ ▄ ▃█▅▆ ▅ ▊ █ ▃▄ █▁ █ █▋ █◣ ︽◤ ▌ ▉ █ █ █ ▉ ▌ ▊▁▌▅▂ ▉ █ ██◣█◤ ▆▅███▅ █ ▋ ▊ ▋▁ ▍█▁ █▆▅▄ -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 140.116.187.207 ※ 文章網址: http://www.ptt.cc/bbs/Examination/M.1403677922.A.1E2.html

→ hatebnn:畫出y=1-x和y=x兩條線，觀察包圍區域的上下限。 06/25 14:38

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