If the document opened in the IFRAME does not have any targets set, then all those links will open in the same iframe as the parent document. You can use this feature to make links in one IFRAME change the contents of another IFRAME on the same page. IFrames and Security. The IFRAME element, by
Sigma notation. mc-TY-sigma-2009-1. Sigma notation is a method used to write out a long sum in a concise way. In this unit we look. at ways of using sigma notation, and establish some useful rules. In order to master the techniques explained here it is vital that you undertake plenty of practice. exercises so that they become second nature.
Now we are going to take a look at function notation and how it is used in Algebra. The typical notation for a function is f(x). This is read as f of x This does NOT mean f times x. This is a special notation used only for functions. However, f(x) is not the only variable used in function notation. You may see g(x), or h(x), or even b(a). You can use any letters, but they must be in the same format - a variable followed by another variable in parenthesis.