若
,则
的初值
为? 0|不存在|1
|-1
,则的初值为? 0|不存在|1|-1
举一反三
- 设[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_067016aa-77f2-4aff-bd36-e3fa5f1bd893.png"],[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_358ab06c-7f19-4ae6-ba82-424c72bd4d18.png"],则[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_2b561af0-b65d-4e5e-936b-72b15b4f0f56.png"][img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_92284d1b-6fe3-4dc1-a732-618796cd01a4.png"] A: 6 B: 10 C: 8 D: 4
- <img src="http://edu-image.nosdn.127.net/B3ADCBA7C6B5D3C3FE3EBA163A871830.gif" />? <img src="http://edu-image.nosdn.127.net/464FB37C0E057ECEFBFD604D894F6DBC.gif" />|<img src="http://edu-image.nosdn.127.net/E195AA464C555910529A829DEE6DA78C.gif" />|<img src="http://edu-image.nosdn.127.net/E629E48667271519EAE5398347707920.gif" />|<img src="http://edu-image.nosdn.127.net/9E081A4E1773DB040515499C530DFFD0.gif" />
- [img src="http://edu-image.nosdn.127.net/E9ECD91FC8FB3437CBAE9E731E05C1F9.bmp?imageView&type=jpeg&thumbnail=890x0&quality=100"] 未知类型：{'options': ['[img src="http://edu-image.nosdn.127.net/844D4F13280FCB22936CC001C2655964.bmp?imageView&type=jpeg&thumbnail=890x0&quality=100"]', '0', '1', '[img src="http://edu-image.nosdn.127.net/39355C3F2BE9AE15346505596CAABAF4.bmp?imageView&type=jpeg&thumbnail=890x0&quality=100"]'], 'type': 102}
- 设A，B为任意两个n阶方阵，则下列一定成立的是 （ ） 未知类型：{'options': ['[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_33399133-78a2-46d1-b0e6-585d3e1a61fa.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_d308b840-8167-4c60-98c2-50ad54a58d80.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_0836c6f0-9141-4013-8ffa-bd3be454df0a.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_46c561a2-1836-4982-9c80-e1bbc2dc9af1.png"]'], 'type': 102}
- <img src="http://edu-image.nosdn.127.net/71A448760C52ECDFD18872E9B72EDB68.PNG?imageView&thumbnail=520x520&quality=100" />? 0<br >|1<br >|2<br >|3<br >