HW3

A)  Use your Linear Solver to solve
	A x = b
for a range of sizes n and record the time it took.

B) Graph the results on log-log paper or the computational
equivalent.  Find a function that fits your data. 

C) Predict what size of matrix would take 2 minutes for
your code on your system.  Make and solve such a system.
Report how long it took.

D) Repeat A-C for the built-in solver.