# graphing logarithmic functions practice worksheet

endstream endobj 29 0 obj <>stream 25 0 obj <> endobj The domain of function f is the interval (0 , + ∞). Graphing and sketching logarithmic functions: a step by step tutorial. Some of the worksheets below are Exponential and Logarithmic Functions Worksheets, the rules for Logarithms, useful properties of logarithms, Simplifying Logarithmic Expressions, Graphing Exponential Functions, … Find the value of y. of f is the set of all x values such that x + 2 > 0. of f is given by the interval (- ∞ , + ∞). exponential function defined by has the following properties:. H��W�r�0}�W�?X��mُ i) m�ঝ��rK�d�I��Y [F�(��l��r�g���6];��s��!X>q����(b���Y����|�>vN돛? We first start with the properties of the graph of the basic logarithmic function of base a, f (x) = log a (x) , a > 0 and a not equal to 1. 1) y = log 6 (x − 1) − 5 x y −8 −6 −4 −2 2 4 6 8 −8 −6 −4 −2 2 4 6 8 2) y = log 5 (x − 1) + 3 x y −8 −6 −4 −2 2 4 6 8 −8 −6 −4 −2 2 4 6 8 3) y = log 6 (x − 3) − 5 x y −8 −6 −4 −2 2 4 6 8 −8 −6 −4 −2 2 4 6 8 4) y = log 2 � �B�:�"�@� \m�>�.��\$���!����g3�Ll4��H�{w�.����DR�CQQ�J��y%��Zt[��H�)���D?�Y��N���c���1��a4~�%�l7z���Jo��ʹ��`���Z'˕����u��H�A/Kp��}q�?O;�@��>H��%��j�:I�'�d�K�ѿ�._�٩���kͬv�6O�*2�6��ɋu�ک� f(0) is undefined since x = 0 is not a value in the domain of f. There is no y intercept. The properties such as domain, range, vertical asymptotes and intercepts of the graphs of these functions are also examined in details. 5) y log (x ) x y 6) y log (x ) Figure C . %%EOF 40 0 obj <>/Filter/FlateDecode/ID[<40E980476425F2342131A18BE101620C>]/Index[25 28]/Info 24 0 R/Length 80/Prev 50642/Root 26 0 R/Size 53/Type/XRef/W[1 2 1]>>stream h޴Vmo�0�+���D��M��h)itU��I�)�)\$(q���w�\$��먦���;�=�=g�pP�v �Y,i�+yL�� ��R�7�\$�M�0����2�`�d`N3|@A%�����@fJܾ>[T���/&0�(P�lE��*�C�yNS���)���MQ�@*9�p}�D� oP3�n`��V�0�I�:��L��bi������+t*����8����`�;�T\iU��� ���}yz%����f/P������^���\$n5P�� This function has an x intercept at (1 , 0) and f increases as x increases. �B0#�ɼ�-S �EF�@P�L l�lL^���M�-^ĥ&�W_e�|�dKv�d��Lv�AR��r������qm!��EO��L�'mA퐡�Y�S��8�Ǳm?�l\��&����/%x�o��� ���L��.�ej��%��.D�62�[��z���ю�vO�m��ٯ�vk0ʖ��ee���}��g����.�w\]t.�t�����(�x���&�q%�()�*���������m�͑�o�#��dF�2�*�F Consider the function y = 3 x . •Recognize,evaluate, and graph natural logarithmic functions. It can be graphed as: The graph of inverse function of any function is the reflection of the graph of the function about the line y = x . (0.000001) which is approximately equal to  -19.93. we need to solve the equation f(x) = 0 or log. •Graph logarithmic functions. ����� ���b`x �y��lF8/Ӌ������&^hnqR�q���U���eX�7�F �kcd}��0 my The range of f is given by the interval (- ∞ , + ∞). 5. is a one-to-one function. Then sketch the graph. h�bbd``b`Z\$�� ����̖@�� �8 "�A�3A�] ��% �-H\9���� c``\$���x�@� � 4. has a graph asymptotic to the -axis. Then sketch the graph. f(0) is undefined since x = 0 is not a value in the domain of f. of f is the set of all x values such that | x | > 0. we need to solve the equation f(x) = 0 or 2 ln(| x |) = 0. is given by (0 , f(0)). 0 Worksheet: Logarithmic Function 1. 1) y log (x ) x y 2) y log (x ) x y 3) y log (x ) x y 4) y log (x ) x y Identify the domain and range of each. endstream endobj 30 0 obj <>stream Why you should learn it Logarithmic functions are often used to model scientific obser-vations. ��^. h�b```f``2f`a`���ǀ |@ �X��#��M|n���=B�� (1) log 5 25 = y (2) log 3 1 = y (3) log 16 4 = y (4) log 2 1 8 = y (5) log 5 1 = y (6) log 2 8 = y (7) log 7 1 7 = y (8) log 3 1 9 = y (9) log y 32 = 5 (10) log 9 y = 1 2 (11) log 4 1 8 = y (12) log 9 1 81 = y 2. :�Å�WN�P���UV� ø6]�@Ѯ�aԸ7.��>�������X���{�(� ��n�����- ���7���6�A`� n!����U��3�ZF֥�&�Evh�֦������KX We first start with the properties of the graph of the basic logarithmic function of base a. %PDF-1.5 %���� h�TQ�n� ���l��k�6�q�k���#�v�0Z��q��W�k��sfΙ�RW�5軟T�zc��yZ�B�p0� mT�Q��(�Mܬs�����3�[p~�����c�@߼Fo�1���ژfq�G��%h� ��H�*G��d�:�0�kOg'zi�3c�T�G����qRdU׫o��5�� V&�=%�YFUF]B���l�����e��V���1g���)��n�E�˸�cj�x�-\$�9�6��p����C~ �W�� is obtained by solving the equation: x + 2 = 0, (0.01) which is approximately equal to  -6.64. Sketch the graph of each function. endstream endobj 26 0 obj <> endobj 27 0 obj <> endobj 28 0 obj <>stream Graphs of Functions, Equations, and Algebra, The Applications of Mathematics in Physics and Engineering, Exercises de Mathematiques Utilisant les Applets, Trigonometry Tutorials and Problems for Self Tests, Elementary Statistics and Probability Tutorials and Problems, Free Practice for SAT, ACT and Compass Math tests, Solve Logarithmic Equations - Detailed Solutions.

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