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Math Help - definite integrals

  1. #1
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    definite integrals

    Evaluate

    \int^x_0 (1/(t^2+4))\,dt

    \int^x_0 \ln{t^2}\,dt

    \int^x_0 \sin{\sqrt{t}}\,dt
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  2. #2
    MHF Contributor Also sprach Zarathustra's Avatar
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    1. int(1/{1+x^2} dx) = arctan(x) +C

    2. lnx^2=2lnx

    3.use substitution x=sqrt(t)
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