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math456 Group Title

Need help with question 4!! Is it -4, 4, and 8?

  • one year ago
  • one year ago

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  1. math456 Group Title
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    • one year ago
  2. dape Group Title
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    The question requests the continuous intervals, so you could just look for runs of curve that's connected and then figure out the end points. The first of these intervals are [-4, 2) (-2, 2) See if you can do the rest.

    • one year ago
  3. math456 Group Title
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    [4, 6) (6, 8] is it right?

    • one year ago
  4. dape Group Title
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    They are almost right, only the end points are wrong. You can see that at x=4 we have a singularity (which means it blows up to infinity), so the function is not defined there. That means x=4 it can't be included in any interval, so instead of [4, 6) it's (4, 6). For (6, 8] it looks like there is an un-filled circle at x=8, which means that it's not in the interval either so it should be (6, 8). You also missed an interval at [2, 4). Hope this helps!

    • one year ago
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    kool, got it now. Thanks :)

    • one year ago
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