1 楼: 陡變吧YQE
∵函數f(x)=a+3x?b與g(x)=1+c2x+1的圖象關於直線y=x對稱∴函數f(x)=a+3x?b與g(x)=1+c2x+1互爲反函數g-1(x)=-12+c2(x?1)=a+3x?b∴a=-12,b=1,c=6∴2a+b+c=6故答案爲:6