=(e)^2x-|||-2. =(e)^-(x^2)-|||-3. =dfrac ({e)^x}(1+x)-|||-4. =dfrac (sqrt {(x+1)
2.求极限 lim _(xarrow infty )[ (2+x)(e)^dfrac (1{x)}-x]
2.求函数(x,y)=(e)^2x(x+(y)^2+2y)的极值2.求函数的极值
(B) ((X-c))^2=E((X-mu ))^2.-|||-(C) ((X-c))^2lt E((X-mu ))^2. (D) ((X-c))^2geqsl
2.设矩阵A,X为同阶方阵,且A可逆,若A(X-E)=E,则矩阵X=()A. E+AB. E-AC. E-A$^{-1}$D. E+A$^{-1}$
2.求 (x,y)=(1+(e)^y)cos x-y(e)^y 的极值.
2.求微分方程 ((e)^x+y-(e)^x)dx+((e)^x+y+(e)^y)dy=0 的通解.-|||-
2.求下列极限:-|||-(1) lim _(xarrow 4)dfrac ({x)^4-256}(x-4);-|||-(2) lim _(xarrow 0)d
设=(x)^2(e)^x,则=(x)^2(e)^x=( )。A =(x)^2(e)^xB =(x)^2(e)^xC =(x)^2(e)^xD
2.计算下列不定积分:(9)int dfrac (x{e)^arctan x}({(1+{x)^2)}^dfrac (3{2)}}dx.2.计算下列不定积分:(