Question

哪位大神能把第2题的Matlab编程写出来，感激不尽，坐等答案，急急急！！！！求求各位~

Answer 1

大神来也，嘻嘻

clc;clear
x=[1.6, 2.7, 1.3, 4.1, 3.6, 2.3, 0.6, 4.9, 3, 2.4]';
y=[17.7,49,13.1,189.4,11.8,34.5, 4, 409.1, 65, 36.9]';
hold on
[x,I]=sort(x);
y=y(I);
plot(x,y,'r-*')
A=[exp(x),sin(x),log(x)];
abc=((A'*A))\(A'*y);
yfit=sum(A.*repmat(abc',size(A,1),1),2);
plot(x,yfit,'g-p')
xlabel('x','fontsize',16)
ylabel('y','fontsize',16)
legend('拟合前','拟合后')
abc