Updated the solutions file for the affine transformations lab.
Merge branch 'develop' of https://github.com/byuimpact/numerical_computing into develop
Merge branch 'develop' of https://github.com/byuimpact/numerical_computing into develop
Made changes to the LU lab.
Minor edits as suggested by the students.
Merge pull request #334 from abefrandsen/student_edits

Student edits