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- 期货从业资格
答案:
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1.1xy- yin y= 0
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2.()x'- yin y=0
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3.()xy'- yin y=0
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4.(3) xin r yin y> ( y)In (r> 0,y>0,r
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5.(5) 2y" y=0,H0)=(0)=y(0)=0,'(0
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6.13、设y=y(x)满足y" 2y y=0,且y(0)=0,y(0)=1,则y(x)dx
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7.El Yin y el Yang son dos conceptos del _______________.
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8.微分方程 y′′−5y′−6y = 0 满足初始条件 y(0) = 2, y′(0) = 5,求 y′′(0) =
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9.1)y"-2y 2y=2e'cost,y(0)=y(0)=0;
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10.4)y-4y2 13y=0,y(0)=0,y(0)=3