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# R3 - Chapter 3 Application of derivatives(Review Stephen...

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Chapter 3 Application of derivatives. (Review) Stephen Suen Chapter 3 Application of derivatives – p. 1/16

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3.1 Increasing/decreasing prop- erties of functions Suppose that f is differentiable on ( a, b ) . Chapter 3 Application of derivatives – p. 2/16
3.1 Increasing/decreasing prop- erties of functions Suppose that f is differentiable on ( a, b ) . f is ր on ( a, b ) iff f ( x ) > 0 for x in ( a, b ) . Chapter 3 Application of derivatives – p. 2/16

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3.1 Increasing/decreasing prop- erties of functions Suppose that f is differentiable on ( a, b ) . f is ր on ( a, b ) iff f ( x ) > 0 for x in ( a, b ) . f is ց on ( a, b ) iff f ( x ) < 0 for x in ( a, b ) . Chapter 3 Application of derivatives – p. 2/16
3.1 Increasing/decreasing prop- erties of functions Suppose that f is differentiable on ( a, b ) . f is ր on ( a, b ) iff f ( x ) > 0 for x in ( a, b ) . f is ց on ( a, b ) iff f ( x ) < 0 for x in ( a, b ) . The places ( x -values) at which f can change from ր to ց , or from ց to ր , are Chapter 3 Application of derivatives – p. 2/16

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3.1 Increasing/decreasing prop- erties of functions Suppose that f is differentiable on ( a, b ) . f is ր on ( a, b ) iff f ( x ) > 0 for x in ( a, b ) . f is ց on ( a, b ) iff f ( x ) < 0 for x in ( a, b ) . The places ( x -values) at which f can change from ր to ց , or from ց to ր , are f ( x ) = 0 , or f ( x ) is undefined . Chapter 3 Application of derivatives – p. 2/16
3.1 Increasing/decreasing prop- erties of functions Suppose that f is differentiable on ( a, b ) . f is ր on ( a, b ) iff f ( x ) > 0 for x in ( a, b ) . f is ց on ( a, b ) iff f ( x ) < 0 for x in ( a, b ) . The places ( x -values) at which f can change from ր to ց , or from ց to ր , are f ( x ) = 0 , or f ( x ) is undefined . These are candidates where the monotonicity of f can change. Chapter 3 Application of derivatives – p. 2/16

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3.1.1 Steps for finding intervals on which f is ր or ց Find f (if not given). Chapter 3 Application of derivatives – p. 3/16
3.1.1 Steps for finding intervals on which f is ր or ց Find f (if not given). Determine values of x at which Chapter 3 Application of derivatives – p. 3/16

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3.1.1 Steps for finding intervals on which f is ր or ց Find f (if not given). Determine values of x at which (a) f ( x ) = 0 , Chapter 3 Application of derivatives – p. 3/16
3.1.1 Steps for finding intervals on which f is ր or ց Find f (if not given). Determine values of x at which (a) f ( x ) = 0 , (b) f ( x ) is undefined. Chapter 3 Application of derivatives – p. 3/16

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3.1.1 Steps for finding intervals on which f is ր or ց Find f (if not given). Determine values of x at which (a) f ( x ) = 0 , (b) f ( x ) is undefined. Use these values of x to divide the real line into intervals Chapter 3 Application of derivatives – p. 3/16
3.1.1 Steps for finding intervals on which f is ր or ց Find f (if not given).

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