This is a linear interpolation and the second error of the difference in the finite element method calculation program. The the program use C++ programming. When you run out of the results also need to draw graphics in matlab.

fem1\fem1\fem1.vcxproj
....\....\fem1.vcxproj.user
....\....\fem1.vcxproj.filters
....\....\data.h
....\....\finite.h
....\....\data.cpp
....\....\finite.cpp
....\....\main.cpp
....\....\Debug\fem1.log
....\....\.....\fem1.lastbuildstate
....\....\.....\vc100.idb
....\....\.....\vc100.pdb
....\....\.....\CL.read.1.tlog
....\....\.....\CL.write.1.tlog
....\....\.....\fem1.exe.embed.manifest
....\....\.....\fem1_manifest.rc
....\....\.....\fem1.exe.embed.manifest.res
....\....\.....\rc.read.1.tlog
....\....\.....\rc.write.1.tlog
....\....\.....\link-cvtres.read.1.tlog
....\....\.....\link-cvtres.write.1.tlog
....\....\.....\fem1.exe.intermediate.manifest
....\....\.....\link.read.1.tlog
....\....\.....\link.write.1.tlog
....\....\.....\mt.read.1.tlog
....\....\.....\mt.write.1.tlog
....\....\.....\link.1644-cvtres.read.1.tlog
....\....\.....\link.1644-cvtres.write.1.tlog
....\....\.....\link.1644.read.1.tlog
....\....\.....\link.1644.write.1.tlog
....\....\.....\link.3828-cvtres.read.1.tlog
....\....\.....\link.3828-cvtres.write.1.tlog
....\....\.....\link.3828.read.1.tlog
....\....\.....\link.3828.write.1.tlog
....\....\.....\link.4156-cvtres.read.1.tlog
....\....\.....\link.4156-cvtres.write.1.tlog
....\....\.....\link.4156.read.1.tlog
....\....\.....\link.4156.write.1.tlog
....\....\.....\link.2724-cvtres.read.1.tlog
....\....\.....\link.2724-cvtres.write.1.tlog
....\....\.....\link.2724.read.1.tlog
....\....\.....\link.2724.write.1.tlog
....\....\.....\link.3644-cvtres.read.1.tlog
....\....\.....\link.3644-cvtres.write.1.tlog
....\....\.....\link.3644.read.1.tlog
....\....\.....\link.3644.write.1.tlog
....\....\.....\link.3808-cvtres.read.1.tlog
....\....\.....\link.3808-cvtres.write.1.tlog
....\....\.....\link.3808.read.1.tlog
....\....\.....\link.3808.write.1.tlog
....\....\.....\link.2228-cvtres.read.1.tlog
....\....\.....\link.2228-cvtres.write.1.tlog
....\....\.....\link.2228.read.1.tlog
....\....\.....\link.2228.write.1.tlog
....\....\.....\finite2.obj
....\....\.....\link.3748-cvtres.read.1.tlog
....\....\.....\link.3748-cvtres.write.1.tlog
....\....\.....\link.3748.read.1.tlog
....\....\.....\link.3748.write.1.tlog
....\....\.....\link.4332-cvtres.read.1.tlog
....\....\.....\link.4332-cvtres.write.1.tlog
....\....\.....\link.4332.read.1.tlog
....\....\.....\link.4332.write.1.tlog
....\....\.....\link.4388-cvtres.read.1.tlog
....\....\.....\link.4388-cvtres.write.1.tlog
....\....\.....\link.4388.read.1.tlog
....\....\.....\link.4388.write.1.tlog
....\....\.....\link.4972-cvtres.read.1.tlog
....\....\.....\link.4972-cvtres.write.1.tlog
....\....\.....\link.4972.read.1.tlog
....\....\.....\link.4972.write.1.tlog
....\....\.....\link.3636-cvtres.read.1.tlog
....\....\.....\link.3636-cvtres.write.1.tlog
....\....\.....\link.3636.read.1.tlog
....\....\.....\link.3636.write.1.tlog
....\....\.....\finite.obj
....\....\.....\main.obj
....\....\.....\data.obj
....\....\0结点解数据10.txt
....\....\0结点解数据20.txt
....\....\0结点解数据40.txt
....\....\0结点解数据80.txt
....\....\0结点解数据160.txt
....\....\0结点解数据320.txt
....\....\finite2.h
....\....\finite2.cpp
....\....\二次元的解数据10.txt
....\....\二次元的解数据20.txt
....\....\二次元的解数据40.txt
....\....\二次元的解数据80.txt
....\....\二次元的解数据160.txt
....\....\二次元的解数据320.txt
....\....\0二次元的解数据10.txt
....\....\0二次元的解数据20.txt
....\....\0二次元的解数据40.txt
....\....\0二次元的解数据160.txt
....\....\0二次元的解数据80.txt
....\....\0二次元的解数据320.txt
....\....\0一次线性有限元数据10.txt
....\....\0一次线性有限元数据20.txt

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