举一反三
- 二次型[img=240x51]18030b89e237419.png[/img]的矩阵为[img=60x51]18030b89eb9472f.png[/img].
- 二次型[img=240x51]1802e1ae1a96abe.png[/img]的矩阵为[img=60x51]1802e1ae234b2b2.png[/img].
- 矩阵 是二次型[img=122x27]1803df7d401d270.png[/img]的矩阵 A: [img=88x51]1803df7d47b58fa.png[/img] B: [img=60x51]1803df7d4f9e073.png[/img] C: [img=60x51]1803df7d57c4d4e.png[/img] D: [img=60x51]1803df7d60782ce.png[/img]
- 矩阵 是二次型[img=122x27]1803176519395aa.png[/img]的矩阵 A: [img=88x51]1803176521b89a6.png[/img] B: [img=60x51]18031765295144f.png[/img] C: [img=60x51]18031765324c8be.png[/img] D: [img=60x51]180317653b4377c.png[/img]
- 二次型[img=187x51]1803df7d3823058.png[/img],其中[img=103x28]1803df7d414f1aa.png[/img]对应的矩阵是 A: [img=60x51]1803df7d4913249.png[/img] B: [img=60x51]1803df7d50b5b22.png[/img] C: [img=88x51]1803df7d57f1e66.png[/img] D: [img=88x51]1803df7d61177d9.png[/img]
内容
- 0
二次型[img=187x51]18031764efef478.png[/img],其中[img=103x28]18031764f89ee7d.png[/img]对应的矩阵是 A: [img=60x51]1803176501507ee.png[/img] B: [img=60x51]180317650a48109.png[/img] C: [img=88x51]18031765123e993.png[/img] D: [img=88x51]180317651b7cea2.png[/img]
- 1
求二次型[img=139x27]18032636d2e8477.png[/img]的矩阵。 A: [img=60x51]18032636dbbe2b2.png[/img] B: [img=88x51]18032636e4d461b.png[/img] C: [img=74x51]18032636ede3f11.png[/img] D: [img=74x51]18032636f653f32.png[/img]
- 2
矩阵[img=60x51]180339445f6fb65.png[/img]对应的二次型是哪个？ A: [img=99x26]18033944682c7c0.png[/img] B: [img=104x26]18033944708ad92.png[/img] C: [img=145x26]180339447943f21.png[/img] D: [img=131x26]180339448164274.png[/img]
- 3
矩阵[img=60x51]18033943916ff38.png[/img]所对应的二次型是哪个？ A: [img=99x26]1803394399b5d03.png[/img] B: [img=130x26]18033943a1ca87f.png[/img] C: [img=121x26]18033943aac0c15.png[/img] D: [img=121x26]18033943b27badf.png[/img]
- 4
二次型[img=89x20]17e0a6b6d2e3247.jpg[/img]经线性替换X=CY化为二次型[img=80x20]17e0a6b6dc313f9.jpg[/img]，其中A,B是对称矩阵，则A与B合同