(Section 1.5: Piecewise-Defined Functions; Limits and Continuity in Calculus) 1.5.2 PART B: THE ABSOLUTE VALUE FUNCTIONLet fx()=x. We discussed the absolute value functionfin Section 1.3, Part N. The piecewise definitionoffis given by: () =x=x,ifx±0²xfx<0³´µ• For instance, f3=3=3, because 3±0, and we use the toprule, which applies to the subdomain0,±²³). • However, f±3=±3=±±3=3, because ±3<0, and we use the bottomrule, which applies to the
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