For ages I've been chuntering on about the importance of showing that Welsh can deal with the modern world. Well, a week ago I got that book up there ... it's a textbook for the A Level Further Mathematics syllabus, and as such it has to explain ...using Welsh ... many complicated topics including advanced differentiation and integration, trigonometric equations, group theory, the manipulation of matrices, determinants, complex numbers ... and a lot more. It does it brilliantly and elegantly, showing how Welsh can certainly do the job.
Here's some of the contents section at the start ...