(Section 1.1: Functions)1.1.5 PART D: EVALUATING FUNCTIONS (THE BASICS)If an input x±Domf(), then its output is a well-defined(i.e., single) value, denoted by fx. • We refer to xhere as the argumentoff. • We refer to as the function valueat x, or the imageof x. is read as “fofx” or “fatx.” WARNING 4:does notmean “ftimes x.” A function can be modeled by an input-output machinesuch as: x±f±When we evaluatea function at an input, we determine the resulting outputand express it in simplified form.
This is the end of the preview. Sign up
access the rest of the document.