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5: Other Functions

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    • 5.1: Piecewise-Defined Functions
      In preparation for the definition of the absolute value function, it is extremely important to have a good grasp of the concept of a piecewise-defined function.
    • 5.2: Absolute Value Functions
      Distances in the universe can be measured in all directions. As such, it is useful to consider distance as an absolute value function. In this section, we will investigate absolute value functions. The absolute value function is commonly thought of as providing the distance the number is from zero on a number line. Algebraically, for whatever the input value is, the output is the value without regard to sign.
    • 5.3: Radical Functions
      In this section we will extend our previous work with functions to include radicals. If a function is defined by a radical expression, we call it a radical function.

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