设[img=14x19]1802ce6bfe56ccd.png[/img]是[img=11x14]1802ce6c0740cf4.png[/img]阶实对称矩阵, [img=12x19]1802ce6c0fedef0.png[/img]是[img=11x14]1802ce6c196401d.png[/img]阶可逆矩阵. 如果[img=11x14]1802ce6c2177731.png[/img]元向量[img=12x14]1802ce6c2acc551.png[/img]是[img=14x19]1802ce6c33d911b.png[/img]的属于特征值[img=11x19]1802ce6c3d1488f.png[/img]的一个特征向量, 那么( )是矩阵[img=78x28]1802ce6c45f3e4b.png[/img]的属于特征值[img=11x19]1802ce6c4f08c9d.png[/img]的一个特征向量.
A: [img=43x22]1802ce6c576060e.png[/img]
B: [img=34x23]1802ce6c5fbb863.png[/img]
C: [img=24x19]1802ce6c677f6ab.png[/img]
D: [img=65x28]1802ce6c7097bc8.png[/img]
A: [img=43x22]1802ce6c576060e.png[/img]
B: [img=34x23]1802ce6c5fbb863.png[/img]
C: [img=24x19]1802ce6c677f6ab.png[/img]
D: [img=65x28]1802ce6c7097bc8.png[/img]
举一反三
- 设[img=14x19]1802ce6bfe56ccd.png[/img]是[img=11x14]1802ce6c0740cf4.png[/img]阶实对称矩阵, [img=12x19]1802ce6c0fedef0.png[/img]是[img=11x14]1802ce6c196401d.png[/img]阶可逆矩阵. 如果[img=11x14]1802ce6c2177731.png[/img]元向量[img=12x14]1802ce6c2acc551.png[/img]是[img=14x19]1802ce6c33d911b.png[/img]的属于特征值[img=11x19]1802ce6c3d1488f.png[/img]的一个特征向量, 那么( )是矩阵[img=78x28]1802ce6c45f3e4b.png[/img]的属于特征值[img=11x19]1802ce6c4f08c9d.png[/img]的一个特征向量. 未知类型:{'options': ['', '', '', ''], 'type': 102}
- 原电池(-)Pt︱Fe[img=17x22]1803dd54de61136.png[/img](1 mol·L[img=17x22]1803dd54e7299c0.png[/img]),Fe[img=17x22]1803dd54f0030fb.png[/img](1 mol·L[img=17x22]1803dd54fa39c0d.png[/img])‖Ce[img=17x22]1803dd5502f9d6b.png[/img]( mol·L[img=17x22]1803dd550b82a7d.png[/img]) ,Ce[img=17x22]1803dd55130efd2.png[/img]( mol·L[img=17x22]1803dd551af174c.png[/img]) ︱Pt(+)的电池反应是( )。 A: Ce[img=17x22]1803dd552375aee.png[/img] + Fe[img=17x22]1803dd552ca7541.png[/img] = Ce[img=17x22]1803dd5534dbdef.png[/img] + Fe[img=17x22]1803dd553dc33d1.png[/img] B: Ce[img=17x22]1803dd552375aee.png[/img] + Fe[img=17x22]1803dd553dc33d1.png[/img] = Ce[img=17x22]1803dd5534dbdef.png[/img] + Fe[img=17x22]1803dd552ca7541.png[/img] C: Ce[img=17x22]1803dd5534dbdef.png[/img] + Fe[img=17x22]1803dd553dc33d1.png[/img] = Ce[img=17x22]1803dd552375aee.png[/img] + Fe[img=17x22]1803dd552ca7541.png[/img] D: Ce[img=17x22]1803dd5534dbdef.png[/img] + Fe[img=17x22]1803dd552ca7541.png[/img] = Ce[img=17x22]1803dd552375aee.png[/img] + Fe[img=17x22]1803dd553dc33d1.png[/img]
- 若X ~ N(3,[img=18x22]1803392546fb4bb.png[/img] ) ,且P{X[img=14x21]180339254fafce9.png[/img]6}=0.9 ,则P{X<0}= .
- 设X是随机变量,且[img=139x31]1802e2aa00edf66.jpg[/img],则D(X)=( ). A: 2 B: 4 C: 6 D: 8
- 采用蒙特卡洛(Monte Carlo)方法,计算1≤x≤2范围内曲线 [img=68x27]1803336d543a2fa.png[/img]与[img=53x22]1803336d5b71770.png[/img]之间的近似面积(如下图阴影部分),那么随机数x,y的取值范围分别为( )[img=560x420]1803336d65905cb.png[/img] A: x∈[1,2],y∈[1/5, 6] B: x∈[0,2],y∈[1/5, 6] C: x∈[1,2],y∈[2/5, 6] D: x∈[1,2],y∈[2, 6]