We plug into the xs on the right side of the equal

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: - 5x + 3 http://tutorial.math.lamar.edu/terms.aspx College Algebra The letter we use does not matter. What is important is the “ ( x ) ” part. The letter in the parenthesis must match the variable used on the right side of the equal sign. It is very important to note that f ( x ) is really nothing more than a really fancy way of writing y. If you keep that in mind you may find that dealing with function notation becomes a little easier. Also, this is NOT a multiplication of f by x! This is one of the more common mistakes people make when the first deal with functions. This is just a notation used to denote functions. Next we need to talk about evaluating functions. Evaluating function is really nothing more than asking what its value is for specific values of x. Another way of looking at it is that we are asking what the y value for a given x is. Evaluation is really quite simple. Let’s take the function we were looking at above f ( x ) = x2 - 5x + 3 and ask what its value is for x = 4 . In terms of f...
View Full Document

This note was uploaded on 06/06/2012 for the course ICT 4 taught by Professor Mrvinh during the Spring '12 term at Hanoi University of Technology.

Ask a homework question - tutors are online