Re必须满足Re=K1/(1+k^2*w^2)灭灭 23:01:07Im=K*K1/(1+k^2*w^2)Im=K*K1/(1+k^2*w^2)K,K1是未知数 w是横坐标也能吗?
p = polyfit(x,y,n)就可以解决你的问题了
eg
x = (0: 0.1: 2.5)';
y = erf(x);
p = polyfit(x,y,6)
p =
0.0084 -0.0983 0.4217 -0.7435 0.1471 1.1064 0.0004