设f(x)=x(x

设f(x)={█( x ,x 设f(x)=1/x(x 设f(x)=1-x,(x 设f(x)=x2+x(x 设f(x)=x(x 设f(x)满足f(1/x)=x/1-x设设f(x)满足f(1/x)=x/1-x ,则f(x+1)=? 设f(x)=(x平方-1)/(x-1) (x 设f(x)=(x平方-1)/(x-1) (x 设f(x)=x+2/x(x 设f(x)=x^2+x(x 设函数f(x)={x^2+x x 设f(x)=x+2÷x(x 设f(x)=x/2+1/x(x 设f(x)=lgx,证明f(x)+f(x+1)=f[x(x+1)] 设函数f(x)满足f(x)+2f(1/x)=x,求f(x) 设f(x)={1+x (-1 设f(x)={1+x (-1 设函数f(x)={ex,x