Expressions are a useful tool, however they can become confusing as the variables all are global. Changing x changes the value of any expression involving x. This is not usually how we want things to ...

January 28, 2011 Add as a preferred source on Google Add as a preferred source on Google If you've made it this far in our programming lessons, you've arrived at the reward. Today we're learning about ...

Thus {f, g} represents the unordered pair of functions f and g. So will plot both f and g on the same graph. We don't care wich order it does them in so we can give f and g as an unordered pair.