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b-rye

  • 3 years ago

Write the function as a piecewise function. f(x) = 3x + |x|

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  1. across
    • 3 years ago
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    Conceptually, it would help you to graph it.

  2. darthjavier
    • 3 years ago
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    Rember |x|=x when x>=0 and -x when x<0, so you can write it like this: \[ f(x) = \left \{ \begin{matrix} 4x & \mbox{if }x\geq0 \\ 2x & \mbox{if }x<0\end{matrix}\right. \]

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