→ RLCorn:0≦x≦1 x≦y≦1 61.230.114.204 06/10 23:38
→ dreamenjoy:我知道是這樣@@ 但不知道上下限怎變換 122.118.6.14 06/11 00:00
→ bibo9901:0<=x<=y<=1, so 0<=y<=1 and 0<=x<=y 122.124.100.9 06/11 00:08
→ dreamenjoy:感恩!我懂了 謝謝 122.118.6.14 06/11 00:09
→ RLCorn:盡量畫畫看 對解題會有幫助 61.230.113.91 06/11 16:34