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Learn about inverse operations in mathematics with logarithmic functions. Explore the definition, graphs, and transformations of logarithmic functions. Practice inverse and properties with Dr. Johnny Duke.
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Logarithmic Functions Dr. Johnny Duke Georgia Highlands College
Inverse In mathematics we like to be able to “undo” whatever has been done. For instance, a child learns to add, then learns to subtract which “undoes” addition. Once one learns to multiply, then division is learned to “undo” multiplication. These are inverse operations.
Graphs of Logarithmic Functions Dr. Johnny Duke
Transformations and Logarithmic Function Horizontal Shift, left one unit.
Transformations and Logarithmic Function Vertical Shift, up two units.
Transformations and Logarithmic Function Reflection through x-axis
Transformations and Logarithmic Function Reflection through y-axis
Transformations and Logarithmic Function Reflection through x-axis; vertical shift down 4 units; horizontal shift right 2 units.
Practice 1 -2 1.398 e 1.792 - .981
Properties of Logarithmic Functions Dr. Johnny Duke
Expanding logarithmic expressions Property 1 Property 3 Property 2 Properties 1 and 3
Contracting logarithmic expressions Property 3 Property 1 Properties 3 and 2 Property 1