I’ve created a number of playlists – which should cover nearly all of the key content that you need for HL Maths. Used alongside a good textbook these should allow you to both prepare for lessons and review them afterwards. Each playlist has a mixture of lesson content and also worked solutions for past paper style questions.
1b) Complex numbers – DeMoivre’s Theorem, converting between polar and Cartesian, sketching complex numbers, solving nth roots, equating real and imaginary parts of equations: