摘要：in是一个100行2列的矩阵，两列分别为x和y。用一条直线y=x*a+b拟合x和y的关系；用最小二乘法计算a和b。x=in(1:100,1);y=in(1:100,2);sumx=0;sumy=0;sumxx=0;sumyy=0;sumxy=0;for i=1:1:100 sumx=sumx+x(i); sumy=sumy+y(i); sumxx=sumxx+x(i)*x(i); sumyy=sumyy+y(i)*y(i); sumxy=sumxy+x(i)*y(i);endplot(in(:,1),in(:,2),'r.'); %用红色的点画出100个样本点hold on; 阅读全文

摘要：Lable<asp:Label ID="Label1" runat="server" Text="Label" CssClass="font_style21"></asp:Label>后台cs文件对lable赋值this.Label4.Text = “this is a lable”;Button <asp:Button ID="Button4" runat="server" onclick="Button4_Click" T 阅读全文