Finding Domain of a Function with a Trinomial as the Denominator

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Taught by mrbrianmclogan
  • Currently 3.0/5 Stars.
6412 views | 1 rating
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Lesson Summary:

In this lesson, you will learn how to find the domain of a rational function with a trinomial denominator. The domain of a function is the set of all possible input values for which the function is defined. When finding the domain of a rational function, you need to determine what values make the denominator zero. To do this, you need to factor the denominator and find the values of x that make it equal to zero. Once you have those values, you can exclude them from the domain.

Lesson Description:

Finding the domain of a rational function with a trinomial as the denominator

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Questions answered by this video:
  • Find the domain of 1/(x²-x-12)
  • Staff Review

    • Currently 3.0/5 Stars.
    At the last step, Domain is R, x ≠ -3,5 It should be x≠-3,-5