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BloomLocke367

  • one year ago

Quick question. What's the domain for this?

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  1. anonymous
    • one year ago
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    for what?

  2. BloomLocke367
    • one year ago
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    |dw:1440792391540:dw| I'm not sure if it's \(-6<x<3\) or \(-6\le x \le 3\), but I'm PRETTY sure it's the first one.

  3. BloomLocke367
    • one year ago
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    I know I didn't include the points, but that's what they are, lol

  4. BloomLocke367
    • one year ago
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    @imqwerty

  5. freckles
    • one year ago
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    the open circles means the relation doesn't exist there

  6. freckles
    • one year ago
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    your relation is not defined anywhere else for x=-6 or x=3 so you definitely will not include x=-6 or x=3

  7. BloomLocke367
    • one year ago
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    So the first inequality was correct?

  8. freckles
    • one year ago
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    yes you don't want to include x=-6 or x=3 and your second inequality does that that is what the little horizontal lines under the inequalities mean less than or equal to

  9. imqwerty
    • one year ago
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    yea the 1st inequality is correct cause the values -6 and 3 are omitted in the graph :)

  10. BloomLocke367
    • one year ago
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    Yes, I know that part @freckles. haha

  11. BloomLocke367
    • one year ago
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    Thanks!

  12. freckles
    • one year ago
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    oh then I guess I wasn't sure why you were asking why not to include the equality part

  13. BloomLocke367
    • one year ago
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    Idek why I was uncertain. I think it's because it was a circle and it was on both sides, but I don't know XD thanks thought :)

  14. freckles
    • one year ago
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    |dw:1440793380136:dw| if it was this then you say: \[-6 < x \le 3 \]

  15. freckles
    • one year ago
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    |dw:1440793415292:dw| or if it was this then you would say: \[-6 \le x \le 3 \]

  16. imqwerty
    • one year ago
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    but hey do we know where is the center of the circle? is it situated at the origin?

  17. freckles
    • one year ago
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    and the one more possibility just for fun: |dw:1440793456096:dw| then you would say: \[-3 \le x < 6 \]

  18. BloomLocke367
    • one year ago
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    Yes, I know what the closed and open circles mean lol XD and no, it's not. I just did a quick sketch of a circle. I have it in front of me on an actual graph with points. I understand now. Thanks

  19. freckles
    • one year ago
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    @imqwerty i think it is not a circle because the midpoint of x=-6 and x=3 is not 0

  20. freckles
    • one year ago
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    not a circle centered at (0,0)*

  21. imqwerty
    • one year ago
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    wait sorry

  22. imqwerty
    • one year ago
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    i asked the most stupid question :'( :P

  23. imqwerty
    • one year ago
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    damn

  24. BloomLocke367
    • one year ago
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    it is a circle. the center is at (-1,1). I just didn't draw it that way

  25. BloomLocke367
    • one year ago
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    Okay, I do have ONE more question on this topic.

  26. BloomLocke367
    • one year ago
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    Just a clarification, really.

  27. BloomLocke367
    • one year ago
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    |dw:1440793616192:dw| those bottom points all have the same y-values, I just didn't bother showing it. XD But one is open and one is closed so would the inequality be the less than or equal to symbol...since it still touches that point in other areas?

  28. BloomLocke367
    • one year ago
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    well, not really that point, but that y-value

  29. freckles
    • one year ago
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    so are you looking at range then

  30. BloomLocke367
    • one year ago
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    yes

  31. freckles
    • one year ago
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    |dw:1440793821415:dw| well a is included

  32. freckles
    • one year ago
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    because that one dot is filled at y=a

  33. freckles
    • one year ago
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    so the range would be [a,b]

  34. freckles
    • one year ago
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    or equivalently an inequality form a<=y<=b

  35. BloomLocke367
    • one year ago
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    So I was right. Thanks! I just wanted to make sure I wasn't wrong. xp

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