I'm looking for an introductory text on algebraic treatment of elementary functions. Really short and easy-going. Video lectures are even better.
I want to learn basic ideas (i.e. definitions) behind integration and differentiation of elementary functions.
I'm also interested in how computer algebra systems like REDUCE or AXIOM treat them as rational functions with some "kernels" (exponents and logarithm's and so on).
Though ideally I'd be happy to start with just polynomials and exponents (sin, cos). So to write symbolic integration and differentiation for a simpler class of functions (no logarithms, division and roots).