
Understanding Extrema on Closed Intervals in Calculus: A Comprehensive Guide
Explore the concept of extrema on closed intervals in calculus, including definitions, critical numbers, relative and absolute extrema, and how to find extrema using step-by-step methods. Learn how to determine minimum and maximum values of functions on specified intervals effectively.
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Presentation Transcript
Chapter Chapter 3 3.1: Extrema On An Interval Extrema On An Interval .1: HONORS CALCULUS/CALCULUS HONORS CALCULUS/CALCULUS
Definition of Extrema 1. ? ? ?? ??? ??????? ?? ? ?? ? ?? ? ? ? ? ? ?? ?. 2. ? ? ?? ??? ??????? ?? ? ?? ? ?? ? ? ? ? ? ?? ?. If f is continuous on a closed interval [a, b], then f has both a minimum and a maximum on the interval. If f is defined at c, then c is called a CRITICAL NUMBER of f if and ? ? = ? or if ? ? ?? ????????? ?? ?. RELATIVE EXTREMA occur only at CRITICAL NUMBERS. If f has a relative min or a relative max at ? = ?, then c is a critical number of f.
Finding Extrema On A Closed Interval To find the extrema of a continuous function f on a Closed Interval [a, b], use the following steps: 1. Find the critical numbers of f in (a, b) 2. Evaluate f at each critical number in (a, b) 3. Evaluate f at each endpoint of [a, b] 4. The Least of These Values is the Minimum/The Greatest is the Maximum
Ex. 1) Find the Absolute Extrema of ? ? = ??? ??? on the interval [ ?,?].
Ex. 2) Find the Absolute Extrema of ? ? = ?? ???/? on the interval [ ?,?].
Ex. 3) Find the Absolute Extrema of ? ? = ????? ????? on the interval [?,??].