,AX=2X+A ,求X.
, AX=2X+A ,求X.
满足 =C+2X, 求X.
已知=(x)^2x+((2x))^x(x>0),求=(x)^2x+((2x))^x.已知(x>0),求.
设A=1 -1 0-|||-0 1 -1-|||--1 0 1-|||-__,AX=2X+A,求X.设A=,AX=2X+A,求X.
11.设函数f(x,y)在点(a,b)处对x的偏导数存在,试求极限 ()-|||-lim f(a+2x,b)-f (a-x,b)-|||-x
例10 求 lim _(xarrow infty )((1-dfrac {2)(x))}^x.
求极限lim-x-tanx-|||--tan x.求极限.
,若矩阵X满足等式 AX=B+X ,求矩阵X.