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osanseviero Group Title

Limit of a function without graphics. Algebraic way :)

  • one year ago
  • one year ago

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  1. osanseviero Group Title
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    \[\lim_{x \rightarrow -3}\frac{ x ^{3}+x ^{2}-21x-45 }{ x ^{3}+7x ^{2}+15x+9 }\]

    • one year ago
  2. hwtrain Group Title
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    I think you just plug in 3 for x

    • one year ago
  3. osanseviero Group Title
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    Nope, it is an idetermination. If you plug in, it is 0/0

    • one year ago
  4. hwtrain Group Title
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    Ok, since the numerator and the denominator has the same degree of 3 wouldn't the limit just be 1 then?

    • one year ago
  5. osanseviero Group Title
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    Nope, there are ways in which you factorize...the thing is that I dont know how to factorize this function

    • one year ago
  6. shamil98 Group Title
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    Factor out the numerator and denominator.

    • one year ago
  7. osanseviero Group Title
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    Just got it, thanks :)

    • one year ago
  8. shamil98 Group Title
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    and simplify what you can in the numerator and denominator , and then plug in your x value

    • one year ago
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