Mar 20th

• Successfully implemented code that approximates solutions to the Van de Pol DAE with DIRK methods using Newton’s method.

• Problem: unlike low order stiffly accurate DIRK where the error goes to 1e-16, the error for the high order DIRK doesn’t go below 1e-9.

Mar 29 th

• VDP problem:

• simple DAE against exact solution with (T = 1)

• Robert’s chemical Run DAE

• Pendulum