Does anyone know about a good book (a dummies book for all I care) that can help with refreshing how to read maths (probably vague so I'll provide an example):

This is from a google book about poincare maps:

Consider the follwing ODE:

\(\dot{x}=f(x)\), \( x \in\Re^n\)

Where:

\(f:U \rightarrow \Re^n\) is \(C^r\)

First line would read as: the first derivative of x equals the output of the function f of x where x is an element of all real numbers

*something*

The second line would then read as:

Where f

*something*U then the real numbers

*something*is part of a complex number

*set?*.

As you might guess, my math "speak" is a bit rusty and I was wondering if people have some recommendations for books that handle with the "speak" problems?

Cheers,