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lopus

  • 3 years ago

which is the domain of the following function

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  1. lopus
    • 3 years ago
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    \[\sqrt{\frac{ x+1 }{ x-2 }}\]

  2. lopus
    • 3 years ago
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    \[( -\infty,-1] \cup (2,\infty) \] or \[( -\infty,-1] \cup [2,\infty)\]

  3. dpaInc
    • 3 years ago
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    HINT: because the radicand is a rational expression, you can exclude x=2...

  4. lopus
    • 3 years ago
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    |dw:1352661106091:dw|

  5. lopus
    • 3 years ago
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    first option ?

  6. dpaInc
    • 3 years ago
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    |dw:1352661410273:dw|

  7. lopus
    • 3 years ago
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    1 include([) but 2 no (() ?

  8. dpaInc
    • 3 years ago
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    sorry... your first option is correct... include -1 but NOT 2

  9. lopus
    • 3 years ago
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    thanks

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