设a>0,若曲线与直线x=a,y=0所围成封闭图形的面积为a,则a =_____.
“∃x∈R,使得x2+(a-1)x+1<0”是真命题,则实数a的取值范围是________.
已知M={y|y=x2},N={y|x2+y2=2},则M∩N=________.
设复数z满足i(z+1)=-3+2i,则=________.
已知f(x)=x3+ax2+bx+a2在x=1处有极值为10,则a+b=________.
函数f(x)=的图象和函数g(x)=log2x的图象的交点个数是________.