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lexy148

  • one year ago

i need help with the following: Convert the following descriptions of numbers into interval notation. 1. All positive numbers not including 0. 2. Every number between -1 and 1 including -1 but not 1. 3. Every number between 1 and 5 not including 2 or 3, but including 1 and 5.

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  1. lexy148
    • one year ago
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    ok i just dont understand how to do it can you give me an example

  2. welshfella
    • one year ago
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    ok all positive numbers including 2 and above would be [2, INF)

  3. lexy148
    • one year ago
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    ok okay i get it now

  4. welshfella
    • one year ago
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    u can use symbol for infinity also \[[2,\infty)\]

  5. lexy148
    • one year ago
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    the one that confuses me is number 2

  6. welshfella
    • one year ago
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    well use [ before the -1 and ) after 1

  7. welshfella
    • one year ago
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    try it

  8. lexy148
    • one year ago
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    k

  9. welshfella
    • one year ago
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    start with [

  10. welshfella
    • one year ago
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    because -1 is included in the interval

  11. lexy148
    • one year ago
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    it would be like this [-1,1)

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