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
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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