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【多选题】
组织承诺内容包括A.
认知承诺
B.
感情承诺
C.
持续承诺
D.
自主承诺
E.
标准承诺
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皮皮学刷刷变学霸
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【简答题】已知二次型f(x1，x2，x3)=mx12+mx22+mx32+2x1x2+2x1x3一2x2x3，则当t为何值时，f是正定的；当t为何值时，f是负定的?
【简答题】已知二次型f（x1,x2,x3）=(1-a)x1^2+（1-a)x2^2+2(1+a)x1x2的秩为2 求a的值，求正交变换x=qy。
【简答题】已知二次型f(x1，x2，x3)=5x12+cx32一2x1x2+6x1x3—6x2x3的秩为2，求参数c及此二次型对应矩阵的特征值．
【简答题】已知二次型f(x1，x2，x3)=5x12+5x22+cx32一2x1x2+6x1x3一6x2x3的秩为2。求参数c及此二次型的矩阵的特征值。 f(x1，x2，x3)=x12+2x22+2x1x2—2x13；
【单选题】A:Stuart, how's it going?
A.
Great, thanks.
B.
What time are you going?
C.
I'm going to finish the PowerPoint for tomorrow's presentation.
D.
Well, yes. But I think I can make it better.
E.
Thanks for the invitation. I'll work on the presentation until eight and then join you for dinner.
F.
It's kind of you to ask but I don't think so. I love my job!
【简答题】Question 25.What is most difficult to do when we turn human values into a programmable code?==== Passage 5 ==== As Artificial Intelce(AI) becomes increasingly sophisticated,there are growing conc...
【简答题】已知二次型f(x1，x2，x3)=mx12+mx22+mx32+2x1x2+2x1x3—2x2x3，则当m为何值时，f是正定的；当m为何值时，f是负定的?
【简答题】已知二次型f(x1，x2，x3)=x12+5x22+x32+2x1x2+2ax2x3为正定二次型，则a的取值范围是——．
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