Recent content by L4N0

  1. L

    Simple Trig Limit: Evaluate lim x->0 of (1-cos4x)/9x^2

    oops, I got confused a bit... Anyways, I used your suggestion and solved it. Thanks again.
  2. L

    Simple Trig Limit: Evaluate lim x->0 of (1-cos4x)/9x^2

    Thank you. So far we are in Ch 2. so we haven't done L'Hopital's rule or power series. I guess saying it is undefined is enough for now.
  3. L

    Simple Trig Limit: Evaluate lim x->0 of (1-cos4x)/9x^2

    Homework Statement Evaluate the limits that exist: lim x->0 of \frac{1-cos4x}{9x^{2}} Homework Equations lim x->0 \frac{1-cosax}{ax} = 0 The Attempt at a Solution so far I've got this \frac{4x}{9x^{2}}\frac{1-cos4x}{4x} The second part has a limit of 0 but I don't know what to...
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