Further revisions
adfewsdf
Revised description of boundary conditions in the numerical method for Poisson's equation.
Added about 4 pages of material for a finite element lab.
Merge branch 'develop' into finite_element

Merge branch 'develop' into finite_elemet
Updating FE lab
Fixed merge conflict in Vol4.tex
Merge branch 'develop' into finite_element

Merge develop into finite_element
Redid description of the weak formulation in the Finite Element lab
Introduced the ODE to be solved in the lab.
Proofread and fixed some small errors.
Added a graph of the BVP solution.
Added two figures showing the hat functions used as a basis in the FE method.
Modified Exercise 3
Merge branch 'finite_element' of git://github.com/joshualy/numerical_computing into finite_element

Conflicts:
	Applications/Poisson/Poisson.tex
Merge pull request #651 from insertinterestingnamehere/finite_element

Finite element