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Odd function

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College Algebra

Definition

An odd function is a function $f(x)$ that satisfies the condition $f(-x) = -f(x)$ for all $x$ in its domain. Graphically, odd functions exhibit symmetry about the origin.

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5 Must Know Facts For Your Next Test

  1. The graph of an odd function is symmetric about the origin.
  2. If $f(x)$ is an odd function, then $-f(x)$ is also an odd function.
  3. Polynomials with only odd-degree terms are odd functions.
  4. The sum of two odd functions is an odd function.
  5. Examples of common odd functions include $f(x) = x^3$ and $f(x) = \sin(x)$.

Review Questions

  • What condition must a function satisfy to be considered an odd function?
  • How can you determine if a polynomial is an odd function by looking at its terms?
  • What type of symmetry do graphs of odd functions exhibit?
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