题目6.设函数f (e^x -1)=x^2+5x+1,则 f(x)= 【 】-|||-A. (ln )^2(x+1)+5ln (x+1)+1 B. (ln )^2(x-1)+5ln (x-1)+1-|||-C. ^2x+5(e)^x-1 D. ^2(x+1)+5(e)^x+1-1题目解答答案
