The College Board web site has posted the AP free response questions from 1995 on in C++.
The following three problems will test your understanding of apmatrices.
Free Response 1995 AB #1b Free Response 1998 AB #1 Free Response 1996 AB #2 Continue to: Unit 4 / Prev / Next
Free Response 1998 AB #1 Free Response 1996 AB #2 Continue to: Unit 4 / Prev / Next
Free Response 1996 AB #2