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Section 2.5 Transformation of Functions

Section 2.5 Transformation of Functions. Graphs of Common Functions. Reciprocal Function. Vertical Shifts. Vertical Shifts. Example. Use the graph of f(x)=|x| to obtain g(x)=|x|-2. Horizontal Shifts. Horizontal Shifts. Example. Use the graph of f(x)=x 2 to obtain g(x)=(x+1) 2.

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Section 2.5 Transformation of Functions

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  1. Section 2.5Transformation of Functions

  2. Graphs of Common Functions

  3. Reciprocal Function

  4. Vertical Shifts

  5. Vertical Shifts

  6. Example Use the graph of f(x)=|x| to obtain g(x)=|x|-2

  7. Horizontal Shifts

  8. Horizontal Shifts

  9. Example Use the graph of f(x)=x2 to obtain g(x)=(x+1)2

  10. Combining Horizontal and Vertical Shifts

  11. Example Use the graph of f(x)=x2 to obtain g(x)=(x+1)2+2

  12. Reflections of Graphs

  13. Reflections about the x-axis

  14. Example Use the graph of f(x)=x3 to obtain the graph of g(x)= (-x)3.

  15. Example

  16. Vertical Stretching and Shrinking

  17. Vertically Shrinking

  18. Vertically Stretching Graph of f(x)=x3 Graph of g(x)=3x3 This is vertical stretching – each y coordinate is multiplied by 3 to stretch the graph.

  19. Example Use the graph of f(x)=|x| to graph g(x)= 2|x|

  20. Horizontal Stretching and Shrinking

  21. Horizontal Shrinking

  22. Horizontal Stretching

  23. Example

  24. Sequences of Transformations

  25. A function involving more than one transformation can be graphed by performing transformations in the following order: • Horizontal shifting • Stretching or shrinking • Reflecting • Vertical shifting

  26. Summary of Transformations

  27. A Sequence of Transformations Starting graph. Move the graph to the left 3 units Stretch the graph vertically by 2. Shift down 1 unit.

  28. Example

  29. Example

  30. Example

  31. (a) (b) (c) (d)

  32. g(x) Write the equation of the given graph g(x). The original function was f(x) =x2 (a) (b) (c) (d)

  33. g(x) Write the equation of the given graph g(x). The original function was f(x) =|x| (a) (b) (c) (d)

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