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Math Help - Piecewise function domain

  1. #1
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    Piecewise function domain

    f(x) =
    x + 12 if x<-4
    5x if |x|<4
    -20 if x>4

    if I drew the graph correctly, the domain is x E R however there is a jump discontinuity at x = -4, does that have any effect on the domain?
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  2. #2
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    Quote Originally Posted by xxlvh View Post
    f(x) =
    x + 12 if x<-4
    5x if |x|<4
    -20 if x>4

    if I drew the graph correctly, the domain is x E R however there is a jump discontinuity at x = -4, does that have any effect on the domain?
    no.
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