x^2-3ax+(2a+1)(a-1)
关于x的不等式ax^2+ax+a-1
若A={x|ax^2-ax+1
ax^2-(a-1)x+1
ax^2-(a+1)x+1
(a+1)/x+2ax+4
解不等式ax^2-x+1-a
x²-2ax+a²-1
合并同类项-3a+5a-6a 2ax²-3ax-7ax² 2x²+1-3x+7-3x
{[ax-2(a+2)][a(x-1)+2]+2(-a^2+4)+3a^2x}/(-2ax),其中a=-1/21,x=-
a*b=ax(a+1)x(a+2)x.x(a+b-1).
已知3阶矩阵A有3维向量A满足A^3X=3AX-A^2X,且向量组X,AX,A^2X线性无关.(1)记P=(X,AX,A
ax>x+2,a(x+1)x+2