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Homework Help: Limits with cos(x) and x^2

  1. Feb 23, 2012 #1
    1. The problem statement, all variables and given/known data

    solve the limit:

    [tex]\lim_{x\rightarrow0}\frac{2cos^{2}(x)-cos(x)-3}{x^{2}}[/tex]


    3. The attempt at a solution

    Ok so i factored out the numerator, but i don't know where to go from there any help please.

    [tex]\lim_{x\rightarrow0}\frac{2cos^{2}(x)-cos(x)-3}{x^{2}}=\lim_{x\rightarrow0}=\frac{(2cos(x)-3)(cos(x)+1)}{x^{2}}[/tex]
     
  2. jcsd
  3. Feb 23, 2012 #2
    Alright never mind i got limit as x approaches 0 to equal -∞.
     
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