ps5 p1 done.

new file:   1dSpringLatticeDensityOfStatesFig1.png
modified:   condensedMatterProblemSet5.tex
modified:   condensedMatterProblemSet5Problem1.tex
modified:   renumber
modified:   ../phy487/mathematica/ps5p1Plot.nb
modified:   ../phy487/renumber
spellcheck p1, p3.