40 fully worked modulus (absolute value) questions for OCR A A-Level Mathematics (H240), every line explained and annotated to the real OCR M/A/B/SC mark scheme. Covers sketching y=|f(x)|, solving ...

Mathematics sometimes has fields that deal with 'invisible things'.Spaces that cannot be seen with the eyes.Structures that ...

This is the Python material that does not get left behind. Almost none of it is replaced by a framework later. Learn it, and keep this cheat sheet close by as a handy reference.

Slicing bytes copies. On a small payload nobody notices, but slice a large packet or image buffer in a loop and the copies ...

Amana passed 192 tests but kept repeating sky names. Here is how modular arithmetic, realistic fixtures, and a Swift harness ...

Wetlands are among the most productive ecosystems in the world, comparable to rain forests and coral reefs. An immense variety of species of microbes, plants, insects, amphibians, reptiles, birds, ...

This premium teaching-resource bundle supports the Pearson Edexcel Year 2 A Level Pure Mathematics chapter on functions and graphs. It develops the key ideas of modulus functions, mappings, domain and ...