Find the Domain of a Function and Its Inverse

In this post, I have embedded an Algebra 2 Video Math Lesson about the function f(x) = \sqrt {2x+2}. Before considering the function, the video defines f^{-1} as the inverse of f or as f inverse.

The video models how to:

  1. Find the domain and range of f(x) = \sqrt {2x+2}
  2. Find f^{-1}
  3. Find the domain and range of f^{-1}
  4. Determine if f^{-1} is a function

If you have any questions regarding the video lesson or other questions regarding finding the inverse of a function, use the comments section.

How To Find and Graph the Inverse of a Function

In this video Algebra 2 Math Lesson, I model how to graph a quadratic function and its inverse. The process starts with graphing a parabola in the form y=a^2+c. The vertex is given by (0,c). After graphing the parabola with four additional points, I create the inverse’s graph by moving the points about y = x line. Finally, I find the inverse of the original function.

If this video math lesson on finding the inverse of a function and then graphing it helped you, leave a comment. Heck, if it didn’t help leave a comment and let me know how to make it better.

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