A small, growing library — built note by note

Maths notes,
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A personal corner of the internet for KS3, IGCSE, A-Level, AP and university maths. Free notes, video walkthroughs, worked examples — open to anyone, forever.

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Derivative Rules
d/dx [xⁿ] = nxⁿ⁻¹
A-LevelCalculus
Quadratic Formula
x = (−b ± √(b²−4ac)) / 2a
A-LevelAlgebra

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