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Math Help - Indefinite integrals

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    Indefinite integrals

    I have a couple problems due tomorrow where you take r'(t) to solve for r(t) using r(0), but I'm having difficulty solving a portion of the problem. Concept-wise I'm asking with help finding the indefinite integral of t*e^t with respect to t. It's likely something simple that I overlooking, but I'd appreciate the help.
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    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by OpaqueCheshire View Post
    I have a couple problems due tomorrow where you take r'(t) to solve for r(t) using r(0), but I'm having difficulty solving a portion of the problem.
    we can't help you if you don't post what you're having problems with

    Concept-wise I'm asking with help finding the indefinite integral of t*e^t with respect to t. It's likely something simple that I overlooking, but I'd appreciate the help.
    for \int t e^t~dt, the conventional way is to use integration by parts. recall the formula: \int u ~dv = uv - \int v~du

    here, let u = t and dv = e^t~dt
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    Thank you. I knew there was something I was forgetting.
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