lim x2 − 1 e = ( )X1 x − 1
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- 医师定期考核
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1.lim x2 − 1 e = ( )X1 x − 1
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2.、求极限: lim ( x2 x 1 x2 x 1) .
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3., lim ( 1) nA,1,但 lim( 1)n 不存在。 n当x时,lim f x
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4.-X=(X1=(X1-X, X2,X2,-X,,Xx,Xn________________X1X2IXn-X-X.nfX1X2Mn丿所以fn —1= (Xi,X2,…,Xx:= ZAZ(2
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5.lim(x趋向于0)(1/x-1/e的2x次方-1)
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6.lim(x/2)^(x/x-2).x趋向于2!第二题:lim(e^(x)-1/x).x趋向于0
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7.如果x1,x2是方程x2-3x 1=0的两个根,那么x1 x2=______,x1•x2=______.
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8.In (x e例38.求极限1imx x3 x2 x 1-√x3 x2 x 1
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9.已知总体X的分布为P{X = i} = 1/4, i = 0, 1, 2, 3, 抽取n = 36的简单随机样本X1, X2, ..., X36, 若Y = X1 + X2 + ... + X36, 则
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10.已知总体X的分布为P{X = i} = 1/4, i = 0, 1, 2, 3, 抽取n = 36的简单随机样本X1, X2, ..., X36, 若Y = X1 + X2 + ... + X36, 则