锐角的集合可以写作
A: [img=52x59]18037fa7a7a576b.jpg[/img]
B: [img=59x51]18037fa7b0a272e.jpg[/img]
C: [img=67x59]18037fa7b8eb183.jpg[/img]
D: [img=60x27]18037fa7c1d7a8c.jpg[/img]
A: [img=52x59]18037fa7a7a576b.jpg[/img]
B: [img=59x51]18037fa7b0a272e.jpg[/img]
C: [img=67x59]18037fa7b8eb183.jpg[/img]
D: [img=60x27]18037fa7c1d7a8c.jpg[/img]
举一反三
- 锐角的集合可以写作 A: [img=52x59]1802e90e3d211a5.jpg[/img] B: [img=59x51]1802e90e458312a.jpg[/img] C: [img=67x59]1802e90e4df22e5.jpg[/img] D: [img=60x27]1802e90e57a8d3b.jpg[/img]
- 锐角的集合可以写作 A: [img=52x59]1803d0504b4c6b5.jpg[/img] B: [img=59x51]1803d05053f4c3c.jpg[/img] C: [img=67x59]1803d0505c77d05.jpg[/img] D: [img=60x27]1803d050659c176.jpg[/img]
- 设X，Y为两个随机变量，且[img=179x25]1803395d555effc.png[/img] , [img=226x25]1803395d61f1a43.png[/img] ,则[img=143x25]1803395d6f00057.png[/img]= ( )． A: 1/7 B: 3/7 C: 4/7 D: 5/7
- 设(X,Y)的分布律为[img=317x47]18039fa216cb556.png[/img]V=max(X,Y), 则P(V=1)等于 A: 1/7 B: 2/7 C: 3/7 D: 4/7
- 设(X,Y)的分布律为[img=317x47]18036e2ccb88792.png[/img]V=max(X,Y), 则P(V=1)等于 A: 1/7 B: 2/7 C: 3/7 D: 4/7