过点[img=65x25]180345bf5c5195f.png[/img]且与两平面[img=118x22]180345bf648594d.png[/img]和[img=119x22]180345bf6cb3097.png[/img]都垂直的平面方程为
A: [img=133x22]180345bf75a8a0e.png[/img]
B: [img=125x22]180345bf7e42842.png[/img]
C: [img=133x22]180345bf876bcc3.png[/img]
D: [img=125x22]180345bf9130d1c.png[/img]
A: [img=133x22]180345bf75a8a0e.png[/img]
B: [img=125x22]180345bf7e42842.png[/img]
C: [img=133x22]180345bf876bcc3.png[/img]
D: [img=125x22]180345bf9130d1c.png[/img]
举一反三
- 过点[img=65x25]180345bf5c5195f.png[/img]且与两平面[img=118x22]180345bf648594d.png[/img]和[img=119x22]180345bf6cb3097.png[/img]都垂直的平面方程为 未知类型：{'options': ['', '', '', ''], 'type': 102}
- ${\rm var}(X)=\,$ ${\bf E}[X]=\,$ ${\bf P}(X=3)=\,$ ${\bf P}(X=-2)=\,$ ${\bf P}(X=1)=\,$ ${\bf P}(X=0)=\,$______
- ${\bf P}(X=4)=\,$ ${\bf P}(X=3)=\,$ ${\bf P}(X=2)=\,$ ${\bf P}(X=1)=\,$______
- ${\bf P}(X=-2)=\,$ ${\bf P}(X=1)=\,$ ${\bf P}(X=0)=\,$______
- 设[img=162x19]17e0ab913cc7ca8.jpg[/img]且X，Y相互独立，则[img=84x19]17e0ab9147a14b0.jpg[/img]. A: 14 B: 22 C: 32 D: 40