题目内容：

已知函数f(x)=根号下x+3+x+2分之一求f(-3),f(三分之二)的值
当a>0时,求f(a),f(a-1)的值
求具体过程及解题思路

优质解答

f(x)=√(x+3)+1/(x+2)f(-3)=√(-3+30+1/(-3+2)=√0+1/(-1)=0-1=-1f(2/3)=√(2/3+3)+1/(2/3+2)=√(11/3)+1/(8/3)=√33/3+3/8a>0时,f(a)=√(a+3)+1/(a+2)；f(a-1)=√(a-1+3)+1/(a-1+2)=√(a+2)+1/(a+1)