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Math Help - Limits question... quick

  1. #1
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    Limits question... quick

    Ok so I am new to calculus and have come up to 3 questions in my book that I am not sure... Could someone help!

    lim (x/x)
    x→0

    lim f(t) where f(t) = sin^2 (pie t), t < -2
    x→-2 2t-4, t >= -2

    lim ((1/x)-(1/|x|))
    x→0+

    For now I have 1 for the first one and does not exist for the other two...Can anyone confirm please?
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  2. #2
    MHF Contributor

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    The first one is correct.

    Can't read the second one. But we eat pie and \pi is the number pi. Try using LaTeX.

    Third one: if x>0 then \dfrac{1}{|x|}=\dfrac{1}{x}.
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