急.求高手帮助matlab拟合求一个函数、曲线x有等于1到24 y是 550 552.3\x05554.5\x05559.1\x05561.4\x05586.4\x05645.5\x05690.9\x05709.1\x05718.2\x05690.9\x05656.8\x05645.5\x05615.9\x05593.2\x05586.4\x05618.2\x05663.6\x05681.8\x05690.9\x
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![急.求高手帮助matlab拟合求一个函数、曲线x有等于1到24 y是 550 552.3\x05554.5\x05559.1\x05561.4\x05586.4\x05645.5\x05690.9\x05709.1\x05718.2\x05690.9\x05656.8\x05645.5\x05615.9\x05593.2\x05586.4\x05618.2\x05663.6\x05681.8\x05690.9\x](/uploads/image/z/3686838-6-8.jpg?t=%E6%80%A5.%E6%B1%82%E9%AB%98%E6%89%8B%E5%B8%AE%E5%8A%A9matlab%E6%8B%9F%E5%90%88%E6%B1%82%E4%B8%80%E4%B8%AA%E5%87%BD%E6%95%B0%E3%80%81%E6%9B%B2%E7%BA%BFx%E6%9C%89%E7%AD%89%E4%BA%8E1%E5%88%B024+y%E6%98%AF+550+552.3%5Cx05554.5%5Cx05559.1%5Cx05561.4%5Cx05586.4%5Cx05645.5%5Cx05690.9%5Cx05709.1%5Cx05718.2%5Cx05690.9%5Cx05656.8%5Cx05645.5%5Cx05615.9%5Cx05593.2%5Cx05586.4%5Cx05618.2%5Cx05663.6%5Cx05681.8%5Cx05690.9%5Cx)
急.求高手帮助matlab拟合求一个函数、曲线x有等于1到24 y是 550 552.3\x05554.5\x05559.1\x05561.4\x05586.4\x05645.5\x05690.9\x05709.1\x05718.2\x05690.9\x05656.8\x05645.5\x05615.9\x05593.2\x05586.4\x05618.2\x05663.6\x05681.8\x05690.9\x
急.求高手帮助matlab拟合求一个函数、曲线
x有等于1到24 y是 550 552.3\x05554.5\x05559.1\x05561.4\x05586.4\x05645.5\x05690.9\x05709.1\x05718.2\x05690.9\x05656.8\x05645.5\x05615.9\x05593.2\x05586.4\x05618.2\x05663.6\x05681.8\x05690.9\x05677.3\x05654.5\x05609.1\x05563.6
拟合出的系数不精确,导致最后的函数不准确啊~
急.求高手帮助matlab拟合求一个函数、曲线x有等于1到24 y是 550 552.3\x05554.5\x05559.1\x05561.4\x05586.4\x05645.5\x05690.9\x05709.1\x05718.2\x05690.9\x05656.8\x05645.5\x05615.9\x05593.2\x05586.4\x05618.2\x05663.6\x05681.8\x05690.9\x
x=1:24;
y=[550 552.3554.5559.1561.4586.4645.5690.9709.1718.2690.9656.8645.5615.9593.2586.4618.2663.6681.8690.9677.3654.5609.1563.6];
p=polyfit(x,y,7);
y1=polyval(p,x);
figure
plot(x,y,x,y1)
可以看出使用七次多项式拟合的结果还是不错的!