Once upon, slover the root equation of a degree and equation of two degree that need input coefficient of equation, data separate need comma or space, output the root equation.
从前求一元一次方程和一元二次方程的根，要求输入方程的系数，数据间逗号或空格分隔，输出方程的根。
The program use The FORTRAN77 language slover the root equation of a degree and equation of two degree, It is succeed that input string of equation, output the root equation.
FORTRAN77编制的求一元一次方程和一元二次方程的根，实现了输入方程字符串，输出方程的根。
This information is used to do multidimensional regression analysis, and an equation is gained, then the model is used for marginal and input-output analysis.
利用这些数据资料进行了复回归分析，得到了方程模型，并进行了边际及投入产出分析。
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