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lexy148

  • one year ago

i need help graphing this, can someone help. The domain is negative infinity < x < + infinity and has a range of negative infinity < y< + infinity.

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  1. misty1212
    • one year ago
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    HI!!

  2. misty1212
    • one year ago
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    can you graph anything with that domain and range?

  3. lexy148
    • one year ago
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    |dw:1440551238566:dw| i was thinking something like this but i dont know if its correct

  4. misty1212
    • one year ago
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    no it is not

  5. misty1212
    • one year ago
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    if the domain is \((-\infty, \infty)\) you could just use \(y=x\)

  6. lexy148
    • one year ago
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    i still dont get what your trying to say

  7. misty1212
    • one year ago
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    |dw:1440551451386:dw|

  8. lexy148
    • one year ago
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    why wouldnt it be curved

  9. misty1212
    • one year ago
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    it just says graph anything right?

  10. misty1212
    • one year ago
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    you can make it curved, but it has to have domain all real numbers, your picture did not

  11. misty1212
    • one year ago
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    |dw:1440551570139:dw|

  12. misty1212
    • one year ago
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    maybe i do not understand the question seems very open ended

  13. lexy148
    • one year ago
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    yeah thats correct what your telling me

  14. lexy148
    • one year ago
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    it also ask to write the maximum and minimum for each one

  15. misty1212
    • one year ago
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    can you post a picture or screenshot or something?

  16. misty1212
    • one year ago
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    i think there is more to the question than "graph anything with domain and range all real numbers" maybe i am wrong, but it seems to open ended besides, who ways it has a max or min also you wrote "each one" like there could be several

  17. lexy148
    • one year ago
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    let me post it give me a sec

  18. misty1212
    • one year ago
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    kk

  19. lexy148
    • one year ago
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    1 Attachment
  20. lexy148
    • one year ago
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    i sent you a pic of the question

  21. misty1212
    • one year ago
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    lol i thought so !!

  22. lexy148
    • one year ago
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    its number 2

  23. misty1212
    • one year ago
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    you actually have a graph, don't you?

  24. misty1212
    • one year ago
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    oooh

  25. misty1212
    • one year ago
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    ok in that case it says pretty much what you said, but you missed "always increasing"

  26. lexy148
    • one year ago
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    yeah srry about that my bad

  27. misty1212
    • one year ago
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    ok so we can use a specific example of a function that is always increasing why make it hard, use \(f(x)=x\) that has domain and range all real numbers, and is strictly increasing

  28. misty1212
    • one year ago
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    Q) does your function have any max or min? A) NO, if it is strictly increasing, it cannot have a local max or min because it keeps going up!

  29. misty1212
    • one year ago
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    actually that answers both questions, the specific one and the general one

  30. lexy148
    • one year ago
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    ok thank you for the help i can answer the rest on my own. just the graphing got me confused

  31. misty1212
    • one year ago
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    also it means my second example above, the curvy one, is wrong, since it is not strictly increasing

  32. misty1212
    • one year ago
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    \[\color\magenta\heartsuit\]

  33. lexy148
    • one year ago
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    ok got that but the straight one would be correct

  34. misty1212
    • one year ago
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    yes it would

  35. lexy148
    • one year ago
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    kk thx :)

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