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1.(3)设A=01-1.AX=2X A,求X。10
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2.5设R3中,a=(x,Z,z)x∈R3,线性变换TT(x,x,x)=(x 2x2 2x,2x x 2x,2x 2x x求一组基,使T在此基下的矩阵为对角阵,并求出此对角阵
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3.设f(x)=(2x 3 -3)(x 2 -5),则f′(x)等于 A.10x4-30x2-6x B.12x3 C.6x4-30x2 D.4x4-6x
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4.7.(1)设f(x 3)=2x3-3x2 5x-1,求f(x)(2)设,求f(Y
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5.3.设f(x)满足f(x) 2f()=3,求f(x)
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6.求极限lim1 cos x)-2x osin X
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7.In(] t2 ) dt30.求x→0(2x
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8.(﹣2x 3 ) 2 x 3 ﹣(3x 3 ) 3 =( ).
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9.计算:()3x (5x-2)-5x ( 3x) =( ); (2)3 (-2x) 2x (3 -x ) =( )
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10.设-3∈{x-2,2x2 5x,12},求x的值.