→ swinerider:2√π吧~ 推 61.224.160.96 06/16
→ Sunghui:令u=(x)^(1/2) 推140.113.123.141 06/16
→ Sunghui:抱歉，我錯了，等其他大師解 推140.113.123.141 06/16
∞ -x
∫ √xe dx = ?
0
2
已知 ∞ -x
∫ e dx = √π
0
感謝感謝.....
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