2.求下列函数的导数:-|||-(1) =sqrt (3-2x)-|||-(2) =sqrt (a-{x)^2};-|||-(3) =((2x+3))^4;-|||-(4) =ln (x+sqrt (1+{x)^2})-|||-(5) =(sin )^6x;-|||-(6) =sin (x)^6;-|||-(7) =sqrt (dfrac {1+x)(1-x)}-|||-(8) =sqrt (x+sqrt {x+sqrt {x)}}-|||-(9) =arcsin sqrt (x);-|||-(10) =ln (sx+tan x);-|||-(11) =(e)^omega xsin (omega x+beta ) (其中,α,w,β为常数);(12)-|||-=sqrt [3](x)(e)^dfrac (1{x)}-|||-(13) =((tan sqrt {x))}^2;-|||-(14) =ln tan dfrac (x)(2)-|||-(15) =(e)^arctan dfrac (x{2)};-|||-(16) =arctan dfrac (x+1)(x-1):-|||-(17) =ln [ ln (ln x)] -|||-(18) =ln ((e)^x+sqrt (1+{e)^2x})

设=tan x，若在=tan x处=tan x，则=tan x.A.=tan xB.=tan xC.=tan xD.=tan x

若矩阵A、B、C满足 =BC, 则 () 。-|||-A. (A)=R(B); B. (A)=R(C);-|||-C. (A)leqslant R(B) ; D. (A)geqslant max R(B),R(C)

=(x)^2sin 2x, 求y(50)

(5)对于函数 f(x)= { , xneq 0 0, x=0 . 在 x=0 处的连续性与可导性,下列说法正确的-|||-是 () .-|||-(A)连续,可导 (B)不连续,不可导-|||-(C)不连续,可导 (D)连续,不可导

(8) lim _(xarrow 0)dfrac (xtan x)(sqrt {1-{x)^2}-1}

1.设离散型随机变量X分布律为PX=k=5A(1/2)^k (k=1,2,...), 则A=_____.

若f(z)=u(x,y)+iv(x,y)在Z平面上解析,v(x,y)=ex(ycosy+xsiny),则u(x,y)=( )A. e x(ycosy-xsiny)B. e x(xcosy-xsiny)C. e x(ycosy-ysiny)D. e x(xcosy-ysiny)

36.判断题解析函数f(z)=u(x,y)+iv(x,y)的u，v互为共轭调和函数。()A. 对B. 错

1.设A,B为满足 AB=E 的任意两个矩阵,则必有(). ()-|||-A.A的列向量组线性无关,B的行向量组线性无关-|||-B.A的列向量组线性无关,B的列向量组线性无关-|||-C.A的行向量组线性无关,B的行向量组线性无关-|||-D.A的行向量组线性无关,B的列向量组线性无关

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