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Math Help - integrals

  1. #1
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    integrals

    Hi, I reall need help on these two problems:

    Let A = integral_0^1 (e^t)/(t+1) dt. Express the values of the following integrals in terms of A.

    A) integral_(a-1)^a (e^-t)/(t-a-1) dt. (the integral from a-1 to a)

    B) integral_0^1 (e^t)log(1+t) dt.

    Thank you
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  2. #2
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    Quote Originally Posted by PersaGell View Post
    Hi, I reall need help on these two problems:

    Let A = integral_0^1 (e^t)/(t+1) dt. Express the values of the following integrals in terms of A.

    B) integral_0^1 (e^t)log(1+t) dt.

    Thank you
    Let u=ln(1+t) und v'=e^t
    Integration by parts,
    {e^t*ln(1+t)}_0^1 - INT(0,1) e^t/(1+t) dt
    Thus,
    e*ln(2) - A
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