Delphi:Delphi曲线图演示，最小二乘法七点曲线拟合演示效果，借此源码可了解系数矩阵、增广矩阵、高斯消元、误差计算、高斯消去后的矩阵右侧系数、迭代初值、迭代求解等相关技巧。 -Delphi: Delphi graph demonstrates, least squares curve fitting seven demonstration effect, whereby the source code can understand the coefficient matrix, au