已知命题P:不等式x^2+2x+1≥0的解集为R;命题q:方程x^2-ax+4=0(a
问题描述:
已知命题P:不等式x^2+2x+1≥0的解集为R;命题q:方程x^2-ax+4=0(a
答
x^2+2x+1=(x+1)^2≥0的解集为R(p明显是真嘛),x^2-ax+4=0(a
已知命题P:不等式x^2+2x+1≥0的解集为R;命题q:方程x^2-ax+4=0(a
x^2+2x+1=(x+1)^2≥0的解集为R(p明显是真嘛),x^2-ax+4=0(a