,AX=2X+A ,求X.
设A=1 -1 0-|||-0 1 -1-|||--1 0 1-|||-__,AX=2X+A,求X.设A=,AX=2X+A,求X.
,若矩阵X满足等式 AX=B+X ,求矩阵X.
设 =A+2X, 求X.
满足 =C+2X, 求X.
已知函数f(x)=(1-ax)ln(1+x)-x.(1)当a=-2时,求f(x)的极值;(2)当x≥0时,f(x)≥0,求a的取值范围.已知函数f(x)=(1-
已知=(x)^2x+((2x))^x(x>0),求=(x)^2x+((2x))^x.已知(x>0),求.
例10 求 lim _(xarrow infty )((1-dfrac {2)(x))}^x.
求极限lim-x-tanx-|||--tan x.求极限.