计算下面第二型曲面积分.[tex=7.857x3.357]s8lkJk4dm0uaVZ54sxh/2J9A9Rw9s65pXeA04XtAwuFVtu8QHxV2+wsRa4U55en4[/tex][tex=3.857x1.357]GxLqYFC1ByaL6cgdP42Icw==[/tex][tex=6.357x1.571]VZDh7RxPGHO/TfPF/GrvYz4/5vrQTpNt9GOrH+Hc/E4=[/tex], 其中 [tex=0.714x1.286]yQZEV57S9rHjYvgfJydTyg==[/tex] 为 [tex=5.929x1.286]SvDRy9JrGmDF7FIoR8wsKA==[/tex], [tex=3.429x1.286]ReqHXkd8l51rHLhNxyrXXw==[/tex][tex=2.357x1.286]0UqQi4uo3PHIbRBfAXuk7g==[/tex] 平面所围的正方体并取外侧为正向.

2022-05-29

计算下面第二型曲面积分.[tex=7.857x3.357]s8lkJk4dm0uaVZ54sxh/2J9A9Rw9s65pXeA04XtAwuFVtu8QHxV2+wsRa4U55en4[/tex][tex=3.857x1.357]GxLqYFC1ByaL6cgdP42Icw==[/tex][tex=6.357x1.571]VZDh7RxPGHO/TfPF/GrvYz4/5vrQTpNt9GOrH+Hc/E4=[/tex], 其中 [tex=0.714x1.286]yQZEV57S9rHjYvgfJydTyg==[/tex] 为 [tex=5.929x1.286]SvDRy9JrGmDF7FIoR8wsKA==[/tex], [tex=3.429x1.286]ReqHXkd8l51rHLhNxyrXXw==[/tex][tex=2.357x1.286]0UqQi4uo3PHIbRBfAXuk7g==[/tex] 平面所围的正方体并取外侧为正向.

答案：

解: 因 [tex=8.143x3.357]s8lkJk4dm0uaVZ54sxh/2J9A9Rw9s65pXeA04XtAwuGUTfrQ/FQgQhGeCv6Ki9F+[/tex][tex=10.071x2.643]0WumeBU8RV+YRxsBLsrAMIvPiSXv5oqR9aUslfyqk2Quwz03sg7jBU8/04tq3/7z[/tex][tex=7.786x2.643]0WumeBU8RV+YRxsBLsrAMC2a1nnv778r8Dn1ZlxecQXgjVQpfe8S1cFaEqM4CIms[/tex][tex=9.286x2.357]WqNB1r74arHPF3wWZJV7D4niR+gDU3TZfb5ke59jiwTxWPPGcUaS2XIad4fNPm0KLqcTCeSeFVQTZTIL+XyN9A==[/tex][tex=8.571x2.357]2gqU9n774gO04feShhSoaxsDEOpqui9lrA3xWyKUZAJqwbkqY+eGFihtTcolpQ+JIHIzze/yGxQmXhJVa0VvmA==[/tex].[tex=5.643x3.357]s8lkJk4dm0uaVZ54sxh/2J9A9Rw9s65pXeA04XtAwuE3ScxogHZ55Mx0qrgEi+fv[/tex][tex=7.214x2.286]z1xpNfZ/fsmN2b9JXrXh35OpxUx64M/4jBWsWl/gXpzN3uW2F5bpKqGbTHO+mFrW[/tex][tex=8.214x2.286]z1xpNfZ/fsmN2b9JXrXh37OXr18/1SkGnemKGQJkPhc9SXze81t4b1++0kci9aAk[/tex][tex=9.929x3.643]rZM5/OPAdr7aX+kNl9iwpMixa+8XLI8rWFkL0afXxKDd7eSwDzkxT1QvFFjUFzcrfGOm54hyxtwvVhopVUk6/Jy8QwQG3hnuaeFBTR/rTAvLFm3W7NkK8PZEhNIFPKmVcI5pFsyXLXIQruH5urz7/w==[/tex][tex=10.429x2.286]z1xpNfZ/fsmN2b9JXrXh3z74tBzHerHeXqr6fjyrTGOt+h6nZHByQj+n85mgfed8WLNMrLDiIUIzLd3bIDHYEw==[/tex][tex=8.786x2.357]z1xpNfZ/fsmN2b9JXrXh35OpxUx64M/4jBWsWl/gXpxromd+ntO2UBajHgQQEr7NbZEQPUbVGpJva1fiWcUKKQ==[/tex]所以 原积分[tex=3.0x2.143]BrbzKWSEjbM8LzTCJzYLZTMYa5J7HVr448nKgawSE/g=[/tex][tex=3.429x2.143]+g02gqZlNa6M8IwK9QEZ9wlSVf1lcWmQWCB9scn2/u8=[/tex].

举一反三

内容

0
【计算题】5 ×8= 6×4= 7×7= 9×5= 2×3= 9 ×2= 8×9= 7×8= 5×5= 4×3= 5+8= 6 ×6= 3×7= 4×8= 9×3= 1 ×2= 9×9= 6×8= 8×0= 4×7=
1
设随机变量X服从[tex=1.929x1.286]HmmJCe8jMYQ7Qi5trX1Z2w==[/tex]上的均匀分布，[tex=5.071x1.286]HnGQba3HT3pL1+jP5xuvNg==[/tex]，则[tex=3.429x1.286]L9cosNMXc0MsOViIFfI1Kw==[/tex][input=type:blank,size:4][/input]。
2
判断下列命题是否为真：（1）[tex=3.643x1.357]/5abqJjwKZ1qr+6hsVFF5EBvfq3ggOFNlHMClz0h9nk=[/tex]（2）[tex=2.929x1.357]rGJpyjIjJpbcoBTWxP0Jiw==[/tex]（3）[tex=4.5x1.357]2wycHMoqU83MyEp17iBils58bR7YLuCTI2G9NVAdlfY=[/tex]（4）[tex=5.214x1.357]CTz2gu+IIm1GgNmYMGaduCRtA41wnW4WqwRWwEhq6aA=[/tex]（5）[tex=4.857x1.357]1DcE2BMMOaZhTuxR/mjgsboXxfg5ET59Dp4I/jjEDuw=[/tex]（6）[tex=4.643x1.357]BSryrsQYOvTP2hTWRu6t4nAuJwlSs4L9jaq70EpB+Us=[/tex]（7）若[tex=6.0x1.357]y0IZLUnBO88nR8WBZYvd7QXv5S1OMINV5cQNzPyiyAc=[/tex]，则[tex=3.429x1.357]1brfPwTkVVIX4GfoMIUskA==[/tex]（8）若[tex=7.643x1.357]MhLfJXZnhbXiB0x3oNtFzThV4Y1mJxe1VYr7PkJE/T6hmTD3WWp+UxbNwvUQ6DHk[/tex]，则[tex=4.143x1.357]LZUA94ISo1po5HWsOVeBCjo0rMvj7uw3bGw5HiZenrI=[/tex]
3
证明：前[tex=0.643x0.786]/he/ol8BkDuTTL9yMPtH4Q==[/tex]个自然数之和的个位数码不能是 2、4、7、9
4
求函数[tex=3.286x1.429]kdT+eIE7CHPynuN6CaN40g==[/tex]（抛物线）隐函数的导数[tex=1.071x1.429]BUw1BPFU3fsJlAl/vt9M9w==[/tex]当x=2与y=4及当x=2与y=0时,[tex=0.786x1.357]Hq6bf3CacUy07X+VImUMaA==[/tex]等于什么?