作业帮急求助用matlab怎么拟合一个过原点的二次函数x=[204.11,219.64,243.34,262.38,281.01,301.81,312.05,320.74,331.71,341.49,349.16,362.35,379.08,401.24,420.91,430.99];y=[64.33,69.17,71.18,75.72,78.55,81.52,82.57,82.20,81.23,77.37,73.13,69.74
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/09 05:09:40
![急求助用matlab怎么拟合一个过原点的二次函数x=[204.11,219.64,243.34,262.38,281.01,301.81,312.05,320.74,331.71,341.49,349.16,362.35,379.08,401.24,420.91,430.99];y=[64.33,69.17,71.18,75.72,78.55,81.52,82.57,82.20,81.23,77.37,73.13,69.74](/uploads/image/z/10136088-0-8.jpg?t=%E6%80%A5%E6%B1%82%E5%8A%A9%E7%94%A8matlab%E6%80%8E%E4%B9%88%E6%8B%9F%E5%90%88%E4%B8%80%E4%B8%AA%E8%BF%87%E5%8E%9F%E7%82%B9%E7%9A%84%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0x%3D%5B204.11%2C219.64%2C243.34%2C262.38%2C281.01%2C301.81%2C312.05%2C320.74%2C331.71%2C341.49%2C349.16%2C362.35%2C379.08%2C401.24%2C420.91%2C430.99%5D%3By%3D%5B64.33%2C69.17%2C71.18%2C75.72%2C78.55%2C81.52%2C82.57%2C82.20%2C81.23%2C77.37%2C73.13%2C69.74)
急求助用matlab怎么拟合一个过原点的二次函数x=[204.11,219.64,243.34,262.38,281.01,301.81,312.05,320.74,331.71,341.49,349.16,362.35,379.08,401.24,420.91,430.99];y=[64.33,69.17,71.18,75.72,78.55,81.52,82.57,82.20,81.23,77.37,73.13,69.74
急求助用matlab怎么拟合一个过原点的二次函数
x=[204.11,219.64,243.34,262.38,281.01,301.81,312.05,320.74,331.71,341.49,349.16,362.35,379.08,401.24,420.91,430.99];
y=[64.33,69.17,71.18,75.72,78.55,81.52,82.57,82.20,81.23,77.37,73.13,69.74,60.59,46.27,23.04,2.98];
急需用matlab编一个简单的程序,使得y=ax*x+bx形式,最好是把拟合出来的函数的公式以及回归因子都给表达出来的,由于本人是刚学的但是作业又急着要交,
急求助用matlab怎么拟合一个过原点的二次函数x=[204.11,219.64,243.34,262.38,281.01,301.81,312.05,320.74,331.71,341.49,349.16,362.35,379.08,401.24,420.91,430.99];y=[64.33,69.17,71.18,75.72,78.55,81.52,82.57,82.20,81.23,77.37,73.13,69.74
clc
clear
x=[204.11,219.64,243.34,262.38,281.01,301.81,312.05,320.74,331.71,341.49,349.16,362.35,379.08,401.24,420.91,430.99];
y=[64.33,69.17,71.18,75.72,78.55,81.52,82.57,82.20,81.23,77.37,73.13,69.74,60.59,46.27,23.04,2.98];
z=y./x;
[p,q]=polyfit(x,z,1)
a=p(1)
b=p(2)
人家不是已经把a和b都给出来了吗