Differentiate xⁿ, for rational values of n, and related constant multiples, sums and differences; differentiate eˢˣ and aˣ, sin kx, cos kx, tan kx and related sums, differences and constant multiples; understand and use the derivative of ln x(Pearson Edexcel A-Level)

Mastery Mind: Mathematics Revision · Oct 20, 2026 · 5m

Differentiation 7.2 is your standard-function toolkit: rational powers, exponentials, trigonometric functions and logarithms all become gradients with a small set of exact rules. Pearson Edexcel rewards disciplined working, especially where a coefficient, a minus sign, an inner factor or a \(\ln a\) is easy to miss. Secure these rules and you unlock direct differentiation marks plus tangents, normals, stationary points and modelling questions. Listen to this audio revision guide for Differentiate xⁿ, for rational values of n, and related constant multiples, sums and differences; differentiate…