Mathematics in BBC BASIC on RISC OS

Introduction “Essential Maths” was a book covering the programming of mathematics concepts like Trigonometry. The book was published thirty five years ago for owners of the BBC and Electron computers – remember those? The writer, Czes Kosniowski, wouldn’t be surprised to know that the principles are as relevant today as they were when he wrote it. Did you know for instance that in a ‘prime sequence’ the only even number is two?

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