2元1次方程组\Project1.dpr ............\Project1.dproj ............\Project1.dproj.local ............\Project1.exe ............\Project1.identcache ............\__history\Project1.dpr.~1~ ............\.........\Project1.dpr.~2~ ............\.........\Project1.dpr.~3~ ............\.........\Project1.dpr.~4~ ............\.........\Project1.dpr.~5~ ............\.........\Project1.dpr.~6~ ............\.........\Project1.dpr.~7~ ............\__history 2元1次方程组