工數問題 - 考試
By Faithe
at 2016-01-18T12:59
at 2016-01-18T12:59
Table of Contents
xy'-y-xsin(y/x)=0
答案是
csc(y/x)-cot(y/x)=cx
可是我算出來答案不太一樣
x(csc(y/x)+cot(y/x))=c
我很確定我應該沒算錯
如果遇到書答案和自己的答案不一樣的情況要怎樣確認哪邊對呢??
PS 考試答案 不一定要寫成y=....嗎?
有時候化簡很麻煩
--
--
答案是
csc(y/x)-cot(y/x)=cx
可是我算出來答案不太一樣
x(csc(y/x)+cot(y/x))=c
我很確定我應該沒算錯
如果遇到書答案和自己的答案不一樣的情況要怎樣確認哪邊對呢??
PS 考試答案 不一定要寫成y=....嗎?
有時候化簡很麻煩
--
→ kimgordon:我味增湯 都不放味曾與豆腐 改放菜頭排骨酥用肉燥提味09/05 15:46
→ kimgordon:又清又香 但就略油 壽司改成糯米加香菇肉絲去蒸09/05 15:47
→ kimgordon:這兩個配起來非常棒 最好是加點香菜09/05 15:47
推 justjihyun:那就是菜頭湯了吧..09/05 15:48
→ kimgordon:不是菜頭湯 這味增湯 喝起來跟排骨酥湯90%口感很像09/05 15:49
→ pusufu:那就是排骨酥湯阿幹09/05 15:50
--
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考試
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at 2016-01-21T23:08
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