设矩阵其中且则为.https://p.ananas.chaoxing.com/star3/origin/c129fefea44503dd19e940909b9e13d4.pnghttps://p.ananas.chaoxing.com/star3/origin/692fbf548c467f5c4ab5af82e2d1b68e.pnghttps://p.ananas.chaoxing.com/star3/origin/320f0f85be6c0b70e443388f72f90b35.pnghttps://p.ananas.chaoxing.com/star3/origin/30cf26f3ed91b1f13b2d9ca4c0df7b0c.png
举一反三
- 下图所示机构自由度计算,( )是正确的。 A: mg src="http://p.ananas.chaoxing.com/star3/origin/cb07ca0fb12be985c301490389c1e187.jpg" B: F=3×7 –(2×9 + 2 – 2)– 2 = 1 C: F=3×7 –(2×9+ 2– 0)– 0 = 1 D: F=3×7 –(2×8+ 2 – 0)– 2 = 1 E: F=3×5 –(2×6+ 2– 0)– 0 = 1
- 设,且,则为.https://p.ananas.chaoxing.com/star3/origin/bcfd54f0a271a01ee42b18a32bee13ef.pnghttps://p.ananas.chaoxing.com/star3/origin/1e8e187c57b45e3758ee18f375e5245c.pnghttps://p.ananas.chaoxing.com/star3/origin/5388c321d53bb7bde57da208ed478542.png
- 设函数,而,其中,则为https://p.ananas.chaoxing.com/star3/origin/bdd3c3c3d814f974d45d9be460d5a66a.pnghttps://p.ananas.chaoxing.com/star3/origin/9013fc3411ac505abed248ac00a80d36.pnghttps://p.ananas.chaoxing.com/star3/origin/f675b4422c15e05748ebddd882faa308.pnghttps://p.ananas.chaoxing.com/star3/origin/3895cb15e5f52df4fab9f7a8ad29c794.png
- (1) 设,且当时,则函数 .https://p.ananas.chaoxing.com/star3/origin/1df4e5fa778b4917e841b8db8167c4fd.pnghttps://p.ananas.chaoxing.com/star3/origin/1df2c0c8afdc2620e06142ca249383d3.pnghttps://p.ananas.chaoxing.com/star3/origin/2dbeeae137681811236ccf243cfc0188.pnghttps://p.ananas.chaoxing.com/star3/origin/8443294c110ad3b06d5a640d6a3c7ade.png
- 设,,矩阵,则秩 ____。https://p.ananas.chaoxing.com/star3/origin/37ef575fe498777db654afddca62fe2c.pnghttps://p.ananas.chaoxing.com/star3/origin/a615458f7dcae581d0fff21cde15a403.pnghttps://p.ananas.chaoxing.com/star3/origin/290ba9cd94f47cfdfb6c2f491dc6ba09.pnghttps://p.ananas.chaoxing.com/star3/origin/4552fd27a3592e03f9b28737ec534441.png