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LearnEdexcelYMA012018 specificationWMA13 · Pure Mathematics 3Exponentials and logarithms

WMA13 · Module

Exponentials and logarithms

2 subtopics≈ 85 min in total

Start the module: The functions eˣ and ln x Open graphing calculator

The functions eˣ and ln x
Meet $e\approx2.718$ , the most natural base for growth, and its inverse $\ln x$ : their graphs, asymptotes and intercepts, transformations, inverses and exact answers.
≈ 40 min
Exponential models and linear forms
Using logarithms in the real world: modelling growth and decay with $Ae^{kt}$ , and turning curves like $y=kx^n$ and $y=ka^x$ into straight lines so their constants can be read from a graph.
≈ 45 min