<p>hey I've the math II 2007 prep guide from barrons, and recently i was at a bookstore where i saw the 2009 edition, and it it, it stated some changes from the 2008 book, and i noticed that the changes were not little. for example they added recursive sequences, transformations, symmetry, counting permutations and combinations, complex numbers and matrices. and they took away stuff like 3d coordinate geometry concepts etc. </p>
<p>do these changes actually correlate to actual changes in the real collegeboard tests that are coming out? and would i be at an disadvantage with my 'outdated' prep guide? </p>
<p>thanks!</p>