设f(x)=
【正确答案】正确答案:由于f(0)=f(0+0)=[9arctanx+2b(x一1) 3 ]| x=0 =一2b, f(0一0)= (sinx+2ae x )=2a, 故当一2b=2a,即a=一b时,f(x)在x=0处连续. 当a=一b时有
【答案解析】