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Unformatted text preview: Math1011 Section 4.1 11/4/2009 Use the graph to state the absolute and local maximum and minimum values of the function on [ 0 , 7 ]. Math1011 Section 4.1 1 Use the graph to state the absolute and local maximum and minimum values of the function on [ 0 , 7 ]. Absolute Min Absolute Max Local max Local min The function is continuous! Critical points at x = 1.1, 2.8, 5.1, and 6.0 End points at x = 0.0, 7.0 Local maximum at (0, 3), (2.8, 4.8) and (6, 5.4) Local minimum at (1.1, 1.3) and (5.1, 1.9), (7, 0.4) Absolute max at (6, 5.4) Absolute minimum at (7, 0.4) (Doc #011w.41.01t) Math1011 Section 4.1 2 Classify all local extreme values and determine whether any of these extreme values are absolute. Sketch the graph of the function. 4 1 ( ) x x f x + = Math1011 Section 4.1 2 Classify all local extreme values and determine whether any of these extreme values are absolute. Sketch the graph of the function. 4 1 ( ) x x f x + = 4 4 3 4 2 1 4 4 4 4 2 1 4 4 4 2 4 4 4 4 1 4 1 1 1 1 1 ( 1 ) 4 2 1 4 2 1 4 4 Find critical points: '( ) '( ) '( ) Critical Points: 1 1 (Add term to other side and Cross Multiply) 1 2 x d d x x dx dx x x x x x x x x x x x x x x x f x f x f x x x x x 1 + + + + + + + + + + + = = = = = + = + = + = 2 4 4 4 4 4 41 1 2 2 / 1/ 1 / 1/ 1 1/ 1 1 ______ 1_______1________ '  +  local minimum at 1, , local max at x = 1 lim lim lim Divide x x x x x x x x x x x x x x f x y y + + + = = = = = = = = 2 4 by highest order in denominator x 1 is an absolute min and x = 1 is an abs max. x x = = 0.80.60.40.2 0.2 0.4 0.6 0.840302010 10 20 30 40 (Doc #011w.41.02t) Math1011 Section 4.1 3 Find the absolute maximum and absolute minimum values of on the given interval. 2/3 ( ) ( 2 ) , [ 1 , 4 ] f x x x o n = Math1011 Section 4.1 3 Find the absolute maximum and absolute minimum values of on the given interval. 2/3 ( ) ( 2 ) , [ 1 , 4 ] f x x x o n = 2/3 2/3 2/3 5/3 1/3 2/3 5 2 3 3 4 Closed Interval Method ( ) is continuous (x and (20x) are continuous) on closed interval Find critical points: ( ) (20 ) 20 '( ) 20( ) Note: critical point at x=0 '( ) f x f x x x x x...
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This note was uploaded on 11/22/2009 for the course CHEM 2070 at Cornell University (Engineering School).
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