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Math Help - continuity intervals

  1. #1
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    continuity intervals

    I can't figure out how to do this problem.

    Find the interval(s) where

    f(x)=sqrt(x-8), x<-4
    3x-2, x>or equal to -4


    is continuous.
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  2. #2
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    Quote Originally Posted by ryandman89 View Post
    I can't figure out how to do this problem.

    Find the interval(s) where

    f(x)=sqrt(x-8), x<-4
    3x-2, x>or equal to -4


    is continuous.
    How can \sqrt{x-8} make sense for x<-4?
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  3. #3
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    thats what I was thinking, but I eventually figured it out. Basically you just ignore that piece and find the range of the other one...really simple.
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