有一段离散数据，时间t和位移u，假设可以用函数u=u(t)表示，当t<0和t>0.2时，u=0，而当    0=<t=<0.2时，u和t为下面离散数据，第一列是时间，第二列是位移u
       0.00                0.00
       0.01             2160.27
       0.02              576.07
       0.03           -12241.53
       0.04           -32260.03
       0.05           -44645.58
       0.06           -38596.82
       0.07           -14257.78
       0.08            19586.45
       0.09            46085.76
       0.10            58039.25
       0.11            55302.91
       0.12            39748.96
       0.13            34276.29
       0.14            60343.54
       0.15            85114.64
       0.16            53430.68
       0.17           -27939.49
       0.18          -109741.72
       0.19          -172389.55
       0.20          -216026.98

y为纵坐标，F为力，F=u(t-y/1400)+u(t-0.544+y/1400),,则F如何用程序来表示呢？希望高手指点