对于图中区域 D, 其中绿线的方程是
, x , 我们有
| xrange , yrange , linewidth=2 plot green, segment ,,,, blue segment ,,,, blue segment ,,,, blue fill ,, skyblue text black,,0,giant, text black,,0,giant, linewidth 1 vline 0,, black hline ,0, black hline , , black text black,,,giant, y= parallel ,,,, 0,1, 20, grey parallel ,,,, 1,0, 20, grey arrow 0,, 0,,10,black arrow ,0, ,0 ,10,black |
D
为.
缺少的积分限是什么 ?xrange , yrange , linewidth=2 fpoly skyblue,,,,,,, poly blue,,,,,,, text black,,giant,A text black,,giant,B text black,,giant,C text black,,giant,D text black,,giant,E text black,,giant,F linewidth 1 vline 0,0, black hline 0,0, black parallel ,,,, 0,1, 20, grey parallel ,,,, 1,0, 20, grey arrow 0,, 0,,10,black arrow ,0, ,0 ,10,black
D
写成以下形式. 问缺少的积分限是什么 ?
xrange , yrange , linewidth=2 fpoly skyblue,,,,,,, poly blue,,,,,,, text black,,giant,A text black,,giant,B text black,,giant,C text black,,giant,D text black,,giant,E text black,,giant,F linewidth 1 hline 0,0, black hline 0,0 , black parallel ,,,, 0,1, 20, grey parallel ,,,, 1,0, 20, grey arrow 0,, 0,,10,black arrow ,0, ,0 ,10,black
设
,
,
,
,
,
是平面的点,
是多边形
围成的区域 (见图). 可以把二重积分 D 写成公式 1. 或公式 2其中 是实数. 你选择哪一个 (1 或 2)? 积分限是什么 ? | xrange , yrange , linewidth=2 fpoly skyblue,,,,,,, poly blue,,,,,,, text black,,giant,A text black,,giant,B text black,,giant,C text black,,giant,D text black,,giant,E text black,,giant,F linewidth 1 hline 0,0, black hline 0,0 , black parallel ,,,, 0,1, 20, grey parallel ,,,, 1,0, 20, grey arrow 0,, 0,,10,black arrow ,0, ,0 ,10,black |
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