请问怎么将拟合的多项式系数变成函数句柄？

怎么才能把拟合得到的多项式系数变成函数放在积分里求解？

L=[1800,1900,2100,2200,2300,2400,2500,2600,2650,2700,2720,2650,2600,2500,2300,2200,2000,1850,1820,1800,1750,1500,1000,900];
S=[32,60,75,85,90,98,100,102,108,112,115,116,118,120,118,105,80,60,50,30,26,20,8,5];

求总排沙量

• 你可以看下这个问题的回答https://ask.csdn.net/questions/7803558