设f(x)={x+1,x≥1.3-x,x

设f(x)=1/x(x 设f(x)=1-x,(x 设函数f(x)=x-[x],x≥0,f(x+1),x 设f(x)={x+1,x≥1.3-x,x 设函数f(x)={(1/2)^x(x≥4),f(x+3)(x 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+1/x(x 分段函数求极限设函数f(x)=｛x ,x≥0 x ,x设函数f(x)=｛x ,x≥0 1 ,x 设函数f(x)={a/x+b/(x²-x) x>1{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)=? 设函数f(x)=(1/2）^x(x≥4), f(x)=f(x+3)(x 设2f(x)+xf(1/x)=(x+2x)/(x+1),求f(x). 设函数f(x)=(x-1)(x-2)...(x-100)(x>100),求F'(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）=｛√x-1,x≥1,x∧2,x 设f(x)={x^2,|x|≥1,x,|x|