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lesson37outline

lesson37outline - MA 153 Lesson 37 Outline Review of Lesson...

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MA 153 Lesson 37 Outline Review of Lesson 36: Logarithms—be sure to be able to switch from log form to exponential form and vice versa. Definition of a logarithm log y a y x a = x = (log form) (exponential form) Domain: which means that you cannot take the logarithm of a negative number of zero. 0 x > Types of Logarithms (1) Regular Log (2) Common Log (3) Natural Log log a y = x x log y = means ln y x = means 10 log y x = log e y x = Answering of homework questions over lesson 36. Lesson 37 Section 5.4 (con’t) Logarithms Graphing Example x y Sketch the graph of f if a =3: (a) ( ) ( ) 3 log log a f x x f x x = =
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(b) 3 2log y x = y x (c) ( ) 3 log 2 y x = + y x (d) 3 log 2 y x = + x y
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