[zhyanchao]

以m=1:5，求和的值为1为例：
syms x;
m=1:5;
s=sum((x-m)/(x-0.5))
solve(f-1)
结果
s=(x-1)/(x-1/2)+(x-2)/(x-1/2)+(x-3)/(x-1/2)+(x-4)/(x-1/2)+(x-5)/(x-1/2)
ans =

29/8