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BloomLocke367

  • one year ago

Can someone help with domain and range?

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  1. theopenstudyowl
    • one year ago
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    yes @BloomLocke367

  2. BloomLocke367
    • one year ago
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    FINALLY OS IS WORKING FOR ME. sorry for the delay

  3. BloomLocke367
    • one year ago
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    |dw:1441325347989:dw|

  4. BloomLocke367
    • one year ago
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    that's just a rough sketch @mathmate can you help? I'm not sure because of the gap

  5. BloomLocke367
    • one year ago
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    @phi

  6. anonymous
    • one year ago
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    Domain is the interval of defined values in the x axis. (That means they are not undefined.) Range is the interval of defined values in the y axis

  7. BloomLocke367
    • one year ago
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    I know what domain and range are xp

  8. BloomLocke367
    • one year ago
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    I have a test tomorrow and I'm doing a review sheet lol. I have half of it done xp

  9. mathmate
    • one year ago
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    |dw:1441325746295:dw|

  10. BloomLocke367
    • one year ago
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    yes I know something like that XD

  11. BloomLocke367
    • one year ago
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    but it's this particular graph that is bugging me

  12. anonymous
    • one year ago
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    I'll help someone then. Pm me if you need further help.

  13. mathmate
    • one year ago
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    |dw:1441325830620:dw| Knowing the interval notation also helps. http://www.coolmath.com/algebra/07-solving-inequalities/03-interval-notation-01

  14. BloomLocke367
    • one year ago
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    I know how to write interval notation and using inequalities lol XD

  15. mathmate
    • one year ago
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    |dw:1441325962951:dw|

  16. BloomLocke367
    • one year ago
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    wouldn't it be [2,5)?

  17. mathmate
    • one year ago
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    |dw:1441326076275:dw| Correction: \([2,5)\cup(9,\infty)\)

  18. mathmate
    • one year ago
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    So it's all clear how you would approach your particular problem?

  19. BloomLocke367
    • one year ago
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    yes I know...so would the domain be [-5,-1)U(3,+inf)?

  20. mathmate
    • one year ago
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    The 3 in incorrect. The point lies on the y-axis, so it's zero. 3 is the y-coordinate.

  21. BloomLocke367
    • one year ago
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    ooopppppppppsss. 0, I just realized that. sorry my sister was talking to me and I really can't focus

  22. mathmate
    • one year ago
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    Note: all points on the y-axis have x-value=0.

  23. mathmate
    • one year ago
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    Good, so you're all set!

  24. mathmate
    • one year ago
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    Can't do the range, because there is not enough information.

  25. BloomLocke367
    • one year ago
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    yes I know XD I'm just frustrated. now how would I write that particular domain using equalities?

  26. BloomLocke367
    • one year ago
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    INequalities*** ugh

  27. mathmate
    • one year ago
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    In set notation, you could write: \(\{x | -5\le x < -1 \cup 0<x<\infty\}\)

  28. anonymous
    • one year ago
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    It is possible for the range is the parabola vertex is actually at 3

  29. anonymous
    • one year ago
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    if the parabola*

  30. BloomLocke367
    • one year ago
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    |dw:1441326406112:dw|

  31. phi
    • one year ago
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    the "little end" of < is next to the smaller value and the "fat end" is next to the bigger number if you want to say [2,5) you write \[ 2 \le x \lt 5\]

  32. mathmate
    • one year ago
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    Do you mean (-3,2) ?

  33. BloomLocke367
    • one year ago
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    there I fixed that issue. *takes a deep breath* and I know @phi I just didn't know know if U was included or not

  34. BloomLocke367
    • one year ago
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    and yes I do omg I just can't get ANYTHING right today. I'm so sorry :(

  35. phi
    • one year ago
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    you use U if you have to glue together "separated" domains

  36. mathmate
    • one year ago
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    So what do you propose for the range?

  37. mathmate
    • one year ago
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    It's similar to the domain, but look along the y-axis.

  38. phi
    • one year ago
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    it looks like [0,2] U (3,inf)

  39. BloomLocke367
    • one year ago
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    that's what I was about to say @phi. I had to refresh

  40. anonymous
    • one year ago
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    Is that an endpoint at the right side of the graph?

  41. BloomLocke367
    • one year ago
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    and no, it's an arrow

  42. BloomLocke367
    • one year ago
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    so set notation would be {\({y~|~0\le y \le 2 U 3<y<\inf}\)}

  43. BloomLocke367
    • one year ago
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    right? or am I wrong? idek. I'm about to give up and go to bed

  44. phi
    • one year ago
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    yes

  45. BloomLocke367
    • one year ago
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    thank you.

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