Problem 2

Problem 2. [16 marks; 20 minutes] (a) Use integration by parts and an appropriate substitution to find arccos x dx (b) Use part (a) to find arccos r dr Problem 3. [16 marks; 20 minutes] (a) Find (2x + 1) (x + 1) dx (b) Use part (a) to carefully find dx (2 + 1) (x + 1)