计算二次型[img=42x23]18032633fdaf449.png[/img],其中[img=213x61]180326340875d94.png[/img]
A: [img=84x23]1803263410cbf12.png[/img]
B: [img=84x23]180326341a3ca55.png[/img]
C: [img=84x23]18032634226adb8.png[/img]
D: [img=84x23]180326342a4098b.png[/img]
A: [img=84x23]1803263410cbf12.png[/img]
B: [img=84x23]180326341a3ca55.png[/img]
C: [img=84x23]18032634226adb8.png[/img]
D: [img=84x23]180326342a4098b.png[/img]
举一反三
- 设数集[img=14x19]18039ee53d2cbdb.png[/img]存在最大数[img=18x19]18039ee545be2d7.png[/img],则 A: [img=43x23]18039ee54dd5d4c.png[/img]不存在 B: [img=84x23]18039ee55642fee.png[/img] C: [img=84x23]18039ee55faca9b.png[/img] D: [img=84x23]18039ee5685a8f3.png[/img]
- 设数集[img=14x19]1802d7249f70fc4.png[/img]存在最大数[img=18x19]1802d724a84b1d1.png[/img],则 A: [img=43x23]1802d724b0e4310.png[/img]不存在 B: [img=84x23]1802d724b9dab51.png[/img] C: [img=84x23]1802d724c1b3120.png[/img] D: [img=84x23]1802d724cacc7a4.png[/img]
- What is the single-precision floating-point number representation of 1.5 ? A: [img=84x23]1803e26b99a5f8e.png[/img] B: [img=82x23]1803e26ba400364.png[/img] C: [img=84x23]1803e26bac548d3.png[/img] D: [img=81x23]1803e26bb530b0b.png[/img]
- 设随机变量[img=52x13]17e0c0edb27595a.gif[/img],[img=60x31]17e0c0edbed05c6.gif[/img],X与Y相互独立,则[img=90x14]17e0c0edcb304a8.gif[/img]= A: -13 B: 15 C: 19 D: 23
- 设总体X服从[img=71x27]180318be4d88e36.png[/img],总体Y服从[img=71x27]180318be5661edd.png[/img],[img=92x23]180318be5f021f3.png[/img]与[img=84x23]180318be66f167d.png[/img]分别来自总体X和Y的简单随机样本。[img=11x14]180318be6f364c9.png[/img]未知,显著性水平为a。则[img=218x23]180318be77fe1a3.png[/img]的拒绝域为( ) 未知类型:{'options': ['', '', '', ''], 'type': 102}