根號[(x+1)^2+(y+2)^2+(x+y+6)^2] + 根號[(x+3)^2+(y-5)^2+(x+y+4)^2]
求最小值?
我的想法是 令z=x+y+6
變成平面x+y-z+6=0上一點 P, 到兩定點(-1,-2,0),(-3,5,2)距離和
再求對稱點連線段
不過這樣好麻煩...
想問問有沒有其他解法的?
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11/04 01:00, , 1F
11/04 01:00, 1F
→
11/04 01:50, , 2F
11/04 01:50, 2F
推
11/04 08:55, , 3F
11/04 08:55, 3F
→
11/04 08:55, , 4F
11/04 08:55, 4F
→
11/04 08:55, , 5F
11/04 08:55, 5F
→
11/04 08:57, , 6F
11/04 08:57, 6F
推
11/04 09:01, , 7F
11/04 09:01, 7F
→
11/04 09:01, , 8F
11/04 09:01, 8F
→
11/04 09:01, , 9F
11/04 09:01, 9F
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