[理工] 機率
http://ppt.cc/A9g~
http://ppt.cc/c9dN
請問一下有關第9題的Y和第10和34題的Z的範圍要怎麼判斷?!?!?!
例如第九題:
ln(x)的範圍不是負無窮到正無窮嗎?! 為什麼最後y的範圍會大於0?!
http://ppt.cc/oDhn
W=I^2R這種圖形要如何畫 雖然有解答 但考試我就畫不出來 請問有甚麼技巧嗎?!
還有積分那行看不太懂...
http://ppt.cc/_Nyf
http://ppt.cc/taEA
這兩題的圖形我也不太會畫
還有z要如何判斷在哪分段去分析呢?!
問題有點多 麻煩大家了^^
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