Okay so I’m not quite in the IB DP, but, from the books that I’ve managed to get my hands on in the library and the students that I’ve talked to, this seems more or less pretty similar to the standard HL Math that students study in 11th and 12th grades, with all the proofs by induction, the trigonometric functions/equations and the calculus, the one difference tho is that in our school’s HL Math curriculum at least, they study so much more than those over the 2 years, so there’s a lot of statistics and sets theory and sometimes if taking a certain type of HL Math (our school offers 2 different types of hl math) you’d also take discrete mathematics and some matrices (i think they removed matrices but again our school is a bit different) n a bunch of other things