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- 汉语水平考试
答案:
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1.56.e" 6ry x2-1=0,则y"(0)
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2.已知函数y=y(x)由方程ey 6xy x2-1=0确定,则y"(0)=______.
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3.13、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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4.设y则0
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5.设P(X≥0,Y≥0)=3/7,P(X≥0)=P(Y≥0)=4/7,则P(max(X,Y)≥0)=
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6.已知P(X≥0,Y≥0)=3/7,P(X≥0)=P(Y≥0)=4/7,则P(max{X,Y}≤0)=( )
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7.(5) 2y" y=0,H0)=(0)=y(0)=0,'(0
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8.若P{X≥0, Y≥0}=3/7, P{X≥0}=4/7, P{Y≥0}=4/7, 则P{max(X, Y)≥0}=
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9.已知点P(x 0 ,y 0 )在圆 上,则x 0 、y 0 的取值范围是( ) A.-3≤x 0 ≤3,-2≤y 0 ≤2 B.3≤x 0 ≤8,-2≤y 0 ≤8 C.-5≤x
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10.已知实数x,y满足约束条件{0≤y;0≤ x-y;0≤2x-y-2 }则z=y-1/x 1