打字猴:1.700993618e+09
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1700993621 附  录
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1700993623 附-1 Ln=n!.
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1700993625 附-2 x=2,y=1,z=-3.
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1700993628 附-3 (1)A+B:(3,-2,-9),A-B:(5,-6,3),证明略;(2)证明略.
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1700993630 附-4 证明略.
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1700993632 附-5 证明略.
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1700993634 附-6 提示:若A·(B×C)=0,则A,B,C共面.
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1700993636 附-7 证明略.
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1700993639 附-8 
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1700993641 附-9 x0=-1是极小值点,函数曲线图略.
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1700993644 附-10 
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1700993648 附-11 v=v0i+(2t/A)j,a=(2/A)j. 附-12 证明略.
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1700993650 附-13 (1)证明略;
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1700993653 (2)
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1700993656 附-14 
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1700993659 附-15 
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1700993662 附-16 
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1700993664 附-17 dy=(sinx1x2+x1x2cosx1x2)(x2dx1+x1dx2).
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1700993667 附-18 
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