中国大学MOOC: 设a,b为非零向量,且http://edu-image.nosdn.127.net/_PhotoUploadUtils_afce490c-2bf9-464c-92cc-9c062ed986e8.png, 则必有( )
举一反三
- 设是三阶矩阵,且均不可逆,是的伴随矩阵,则行列式()。 A: 9/2 B: -9/2 C: 9/8 D: -9/8
- 中国大学MOOC: 设http://edu-image.nosdn.127.net/_PhotoUploadUtils_b7ec333e-7750-4b60-85f1-7536124da4b9.png是可微函数，http://edu-image.nosdn.127.net/_PhotoUploadUtils_ee7c8959-d08f-429c-873e-e19d48a3eea1.png且http://edu-image.nosdn.127.net/_PhotoUploadUtils_9e3a6838-0c7a-46aa-9ebc-e517e07ac003.pnghttp://edu-image.nosdn.127.net/_PhotoUploadUtils_176d9f96-ca57-445d-9a62-ab294a2b753f.png则
- 中国大学MOOC: 设http://edu-image.nosdn.127.net/_PhotoUploadUtils_e6b28d90-9667-41c3-8029-09bcb38b7612.png,则http://edu-image.nosdn.127.net/_PhotoUploadUtils_3ba59e0f-6259-491f-bfff-3481fc8341de.png
- 中国大学MOOC: 设http://edu-image.nosdn.127.net/_PhotoUploadUtils_c6584f20-0e48-4592-8ae4-0b6a0dd479b7.png，则http://edu-image.nosdn.127.net/_PhotoUploadUtils_ff019913-6bfb-4c0e-86df-b52f94081101.png.
- 中国大学MOOC:"设http://edu-image.nosdn.127.net/_PhotoUploadUtils_61eb1c2f-1131-4426-9154-43439521c9f3.png，则http://edu-image.nosdn.127.net/_PhotoUploadUtils_f4e45abd-1e3e-45a9-8e8e-787a6b14d226.png";