Tasks that test conservation of equation and function under transformations of variable illustrate an extension of Piaget's conservation methodology to relational concepts. Less than half of the 30 ...

The objective of this paper is to present a simple framework for the derivation and analysis of orthogonal IIR transfer functions, which are directly related to orthogonal rational functions.

First we have proportional parts of all numbers up to 100; then on one page three-place logarithms of numbers and of the six trigonometric functions, natural and logarithmic.

Math 117 - Pre-Calculus for Scientists and Engineers is a four-credit course will concentrate on analyzing and exploring the basic function classes (linear, quadratic, polynomial, rational, ...