Welcome to the first issue of Parabola Incorporating Function for 2011. The first article in, by John Perram, describes different meanings of equality. For example, we might write \( y=x^2+x+1 \) to define \( y \) or to represent an equation.
Using a computer algebra system (CAS) such as Mathematica to relate a mathematical narrative requires a more disciplined use of symbols and terms than is common in mathematical text.
When I entered my third year of university study, I was introduced to the topic of Fluid Mechanics $-$ the mathematical analysis of the flow of liquids and gases. I found that the concept of a fluid that is analyzed in that context is not exactly that which applies to real fluids.
Q1351 A city consists of a rectangular grid of roads, with $m$ roads running east-west and $n$ running north-south. Every east-west road intersects every north-south road.