设x=-1的时候,级数条件收敛,则级数https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/401402683ec94a2282d52ec20c6bc17a.png
举一反三
- 级数均收敛是级数收敛的https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/f64dd2a6870e4d06984b443719788308.png
- 这个级数收敛吗?https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/16f58973296d49c4a3f7f6f66a46c00a.png
- 若级数与都发散,则https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/be817f06362e4541a985431b4d3706f5.png
- 前项和为的级数是( )https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/53e45c86025d478084e3f2449447d544.png
- 设A=<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/bc546fc03fdb4ba3b7e6b144b6371d7f.png" />,B=Р(Р(A)) 下列( )表达式不成立。 A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/6e615703da60435893f9e9a9273e12e5.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/64c831067d054e71a6c76f43849d450d.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/72023a5250e44c12b98923044194f13d.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/c48e039a739c4502830eee7ae0ac1678.png" />