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I am co-author of the Mathematical Association book "Teaching A level Maths" available here: https://members.m-a.org.uk/Shop/product/1188

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I am co-author of the Mathematical Association book "Teaching A level Maths" available here: https://members.m-a.org.uk/Shop/product/1188
Invariant lines in 2D
SRWhitehouseSRWhitehouse

Invariant lines in 2D

(1)
A collection of resources (notes, worked examples, an exercise, exam style questions) covering lines of invariant points and invariant lines under matrix transformations in 2D
The two solutions of the equation cosh x = a
SRWhitehouseSRWhitehouse

The two solutions of the equation cosh x = a

(1)
This worksheet looks in more detail at why cosh x = a has 2 solutions even though arcosh x is uniquely defined, and the different ways these 2 solutions can be expressed. Key words: hyperbolics, equations, inverse hyperbolic functions