Lesson 17 - Maxima Minima Problem

# Lesson 17 - Maxima Minima Problem - Applcation 3...

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Unformatted text preview: Applcation 3 Optimization Problems MAXIMA and MINIMA PROBLEMS OBJECTIV ES : • identify the quantity to be maximized or minimized, • apply the knowledge of derivatives and critical points in solving maximum and minimum problems and • solve maximum and minimum problems with ease and accuracy. A Procedure for Solving Applied Maximum and Minimum Problems (p. 276) Steps in solving maximum and minimum problems . 1.If needed, draw the figure and indicate the unknown parts by variables. 2.Make the necessary representation for the variables used. 3.Determine the quantity, the dependent variable, to be maximized or minimized. 4.Find a formula relating the variables. 5.Express the dependent variable in step 3 in terms of a single variable, the independent variable. 6.Differentiate the dependent variable in terms of the independent variable. 7.Equate the derivative in step 6 to zero, for maximum or minimum value, to find the critical numbers. 8.Answer the problem completely. Example 1 Divide 120 into two parts such that the product of one part and the square of the other is a maximum. Find the numbers. ( 29 ( 29 ( 29 ( 29 2 2 2 2 2 x 3- 240x M' x x 2- 240x M' 1 x x 2 x- 120 M' x x- 120 M' : Equation part other the of square the and part one of product the be M part other the be x- 120 part one be x Let =- =- + = = = = = ( 29 = → =- = → = ⇒ = = ⇒ = 80 x x 80 x x 3 x- 80 3x 3x- 240x dx dM 2 ( 29 ( 29 ( 29 ( 29 40 x- 120 and 80 x : answer imum...
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Lesson 17 - Maxima Minima Problem - Applcation 3...

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