设[tex=3.143x1.357]5GsAo+Z/osV3R3OuJpjhLA==[/tex]，[tex=3.143x1.357]uDjNZQzVNSPpO92HvKNvug==[/tex]两曲线相交于[tex=2.857x1.357]ckczIdmQJg3icGPkJfgw6Ij3HDfjZLfGrAW4F50TO2Y=[/tex]，[tex=2.857x1.357]3SUxf5AqQVQ9zERdutNq+IkaQn5SBBK65flSVFHU4bc=[/tex]，且[tex=4.5x1.357]8lykoauS8LqHlM38f8nuSeYAUi6p+7DZLgHJsWTjugHGaoI8RcTBrlVp62qrtHOA[/tex]时，[tex=3.714x1.357]xedq2Lst+1l6V9zyDdbwNA==[/tex]，[tex=3.714x1.357]9UvVKoWh5xQVsiE+hlRKNw==[/tex]，那么由曲线[tex=3.143x1.357]SvkmdiaSCBne2lfTn9xiFw==[/tex]及[tex=3.143x1.357]8q+QHnuxDxPxrz9o0HRV5g==[/tex]所围成的图形绕[tex=0.571x0.786]ZKO2xs0EgSemzoH7MSmYTA==[/tex]轴旋转一周所得旋转体的体积[tex=1.429x1.0]pQmePoqkvXO1F+SgtK/vyQ==[/tex]（）. 未知类型：{'options': ['[tex=8.857x2.786]Y/fjXw06ctvwbq2P4XY2gUsJcr1JPG+cB0AYVc27xVWvCSnShf2oI61XGDPCHyap[/tex].', '[tex=10.571x2.786]Y/fjXw06ctvwbq2P4XY2gQKfu/nY9z7wFvl7yLjVMYPeXXyDHeDEMXdRqKj/CGRgvQpxREMCvLtTGLFwgra0JA==[/tex].', '[tex=4.929x2.714]WdYFOXfG5nnGW/WgiEfXSxgx0dv24FOwcwExU8BnZj04cuvj/S/UWDtvxe3ZBK2P[/tex].', '[tex=5.357x2.786]WdYFOXfG5nnGW/WgiEfXSxAi5s//4PRN2is33I6mHjzYv0cSXyzFlfivT3mrcNiLCx8K0fm1xM+kq14Nvf75dg==[/tex].'], 'type': 102}

2022-06-18

设[tex=3.143x1.357]5GsAo+Z/osV3R3OuJpjhLA==[/tex]，[tex=3.143x1.357]uDjNZQzVNSPpO92HvKNvug==[/tex]两曲线相交于[tex=2.857x1.357]ckczIdmQJg3icGPkJfgw6Ij3HDfjZLfGrAW4F50TO2Y=[/tex]，[tex=2.857x1.357]3SUxf5AqQVQ9zERdutNq+IkaQn5SBBK65flSVFHU4bc=[/tex]，且[tex=4.5x1.357]8lykoauS8LqHlM38f8nuSeYAUi6p+7DZLgHJsWTjugHGaoI8RcTBrlVp62qrtHOA[/tex]时，[tex=3.714x1.357]xedq2Lst+1l6V9zyDdbwNA==[/tex]，[tex=3.714x1.357]9UvVKoWh5xQVsiE+hlRKNw==[/tex]，那么由曲线[tex=3.143x1.357]SvkmdiaSCBne2lfTn9xiFw==[/tex]及[tex=3.143x1.357]8q+QHnuxDxPxrz9o0HRV5g==[/tex]所围成的图形绕[tex=0.571x0.786]ZKO2xs0EgSemzoH7MSmYTA==[/tex]轴旋转一周所得旋转体的体积[tex=1.429x1.0]pQmePoqkvXO1F+SgtK/vyQ==[/tex]（）. 未知类型：{'options': ['[tex=8.857x2.786]Y/fjXw06ctvwbq2P4XY2gUsJcr1JPG+cB0AYVc27xVWvCSnShf2oI61XGDPCHyap[/tex].', '[tex=10.571x2.786]Y/fjXw06ctvwbq2P4XY2gQKfu/nY9z7wFvl7yLjVMYPeXXyDHeDEMXdRqKj/CGRgvQpxREMCvLtTGLFwgra0JA==[/tex].', '[tex=4.929x2.714]WdYFOXfG5nnGW/WgiEfXSxgx0dv24FOwcwExU8BnZj04cuvj/S/UWDtvxe3ZBK2P[/tex].', '[tex=5.357x2.786]WdYFOXfG5nnGW/WgiEfXSxAi5s//4PRN2is33I6mHjzYv0cSXyzFlfivT3mrcNiLCx8K0fm1xM+kq14Nvf75dg==[/tex].'], 'type': 102}

设[tex=3.143x1.357]5GsAo+Z/osV3R3OuJpjhLA==[/tex]，[tex=3.143x1.357]uDjNZQzVNSPpO92HvKNvug==[/tex]两曲线相交于[tex=2.857x1.357]ckczIdmQJg3icGPkJfgw6Ij3HDfjZLfGrAW4F50TO2Y=[/tex]，[tex=2.857x1.357]3SUxf5AqQVQ9zERdutNq+IkaQn5SBBK65flSVFHU4bc=[/tex]，且[tex=4.5x1.357]8lykoauS8LqHlM38f8nuSeYAUi6p+7DZLgHJsWTjugHGaoI8RcTBrlVp62qrtHOA[/tex]时，[tex=3.714x1.357]xedq2Lst+1l6V9zyDdbwNA==[/tex]，[tex=3.714x1.357]9UvVKoWh5xQVsiE+hlRKNw==[/tex]，那么由曲线[tex=3.143x1.357]SvkmdiaSCBne2lfTn9xiFw==[/tex]及[tex=3.143x1.357]8q+QHnuxDxPxrz9o0HRV5g==[/tex]所围成的图形绕[tex=0.571x0.786]ZKO2xs0EgSemzoH7MSmYTA==[/tex]轴旋转一周所得旋转体的体积[tex=1.429x1.0]pQmePoqkvXO1F+SgtK/vyQ==[/tex]（）.
未知类型：{'options': ['[tex=8.857x2.786]Y/fjXw06ctvwbq2P4XY2gUsJcr1JPG+cB0AYVc27xVWvCSnShf2oI61XGDPCHyap[/tex].', '[tex=10.571x2.786]Y/fjXw06ctvwbq2P4XY2gQKfu/nY9z7wFvl7yLjVMYPeXXyDHeDEMXdRqKj/CGRgvQpxREMCvLtTGLFwgra0JA==[/tex].', '[tex=4.929x2.714]WdYFOXfG5nnGW/WgiEfXSxgx0dv24FOwcwExU8BnZj04cuvj/S/UWDtvxe3ZBK2P[/tex].', '[tex=5.357x2.786]WdYFOXfG5nnGW/WgiEfXSxAi5s//4PRN2is33I6mHjzYv0cSXyzFlfivT3mrcNiLCx8K0fm1xM+kq14Nvf75dg==[/tex].'], 'type': 102}

答案：

B

举一反三

内容

0
有容量分别为[tex=3.286x1.286]pCZ+fPe3X5XtlIcXCf6RGw==[/tex]和[tex=3.286x1.286]JjWMjbwalVPPThZBywJsLQ==[/tex]的独立随机样本得到下述观测结果，（X、 Y为观测值， f为频数）X 12.3 12.5 12.8 13.0 13.5 Y 12.2 12.3 13.0f 1 2 4 2 1 f 6 8 2现已知变量X、Y的总体均呈正态分布。请问在0.05的显著性水平下，可否认为这两个总体属同一分布？[tex=24.786x1.286]OVWwFMgiPzBDnRSqBYypUv4puOxaqZVbzeGoYhEt/ZwiQxP0kGgAAWuaJInyBhH09xLkSWqB6n3qd1WXaKpfvwUNfmmVSMJTzi4wz4IT6q4=[/tex][tex=8.429x1.286]AcUD6cTXhAghaQMem3GRbFMfFVpZHcyA3tP0z+S7RAk=[/tex] [tex=13.357x1.357]ZPe8nXNlBeMmW2cEA+D6DaqP/loFbcVH2QukDH1SMofLM6E74nDyl0WrH8imm/Ai[/tex]
1
若:(1)函数 f(x)在点[tex=3.714x1.357]7VByCIzkNySq3s2l9I6f5zccNJDeV+6SQrVr3iwjgB0=[/tex]有导数,而函数g(x)在点[tex=2.286x1.0]DSJKaWfJALImFxxTg/8qhA==[/tex]没有导数;(2)函数f(x)在点[tex=3.714x1.357]7VByCIzkNySq3s2l9I6f5zccNJDeV+6SQrVr3iwjgB0=[/tex]没有导数,而函数g(x)在点[tex=2.286x1.0]DSJKaWfJALImFxxTg/8qhA==[/tex]有导数;(3)函数f(x)在点[tex=3.714x1.357]7VByCIzkNySq3s2l9I6f5zccNJDeV+6SQrVr3iwjgB0=[/tex]没有导数及函数g(x)在点[tex=2.286x1.0]DSJKaWfJALImFxxTg/8qhA==[/tex]没有导数,则函数[tex=5.643x1.357]GmtX7Vop79exGU/rpqXUYw==[/tex]在已知点[tex=2.286x1.0]DSJKaWfJALImFxxTg/8qhA==[/tex]的可微性怎样?
2
set1 = {x for x in range(10)} print(set1) 以上代码的运行结果为？ A: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} B: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10} C: {1, 2, 3, 4, 5, 6, 7, 8, 9} D: {1, 2, 3, 4, 5, 6, 7, 8, 9,10}
3
[tex=8.429x2.857]QFdSgPtZeb4vss+fgMHYaoSHzEWw/2UlNe9qnJJgrI74FX8HWgZv9HRjPF77eNHbg6za3Ica93ODQTP7Mc6gcA==[/tex]则 [tex=3.143x1.357]KiwcT6mwR4irA4J3mE3lAg==[/tex] 未知类型：{'options': ['0', '-1', '2', '[tex=0.714x2.0]VTrdua9N5EDHg65xKeLgBTM97XTe+DYBUh6qrSwzUmk=[/tex]'], 'type': 102}
4
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]