I find it difficult to reproduce in typing what I’d like to write. Lee in Xi’an tells me I should learn to use LaTEX which will allow me to format anything at the same standard as exam boards need to use. I say that the use is so small that the learning cost is too high for the return on time investment.
Calculus consists, at school, in two fields, differentiation and integration. Further maths students reach the heady field of differential equations. Here are pages I have written to assist with these topics, excluding all the sample exam questions, which are filed under revision or something similar.
Reduction Formulae is usually a topic for FM, but I think it belongs in here with calculus.