These are very useful sheets with a lovely structure and I especially like the focus on a single topic which helps to keep it simple for learners when the concept is new. Thanks for sharing.

I've been using a lot of these resources for hyperbolic functions and have found them excellent and extremely helpful. One query: on the "Using the inverse hyperbolic logarithmic expressions" document, should it say "The equation coshx=a has no solutions if a<1" rather than x<1? Many thanks for sharing your resources.