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Few hard integrations in Dif.equation solution

  1. Jan 20, 2009 #1
    1. The problem statement, all variables and given/known data

    First

    z(t) + (-tz + 3t)dt=0

    Second:

    in attachment

    2. Relevant equations

    How can one solve hose integrations I was faced as one part in solving Dif. equation.

    3. The attempt at a solution

    I have tried to soleve bouth of them by usin substitution rule but I have failed do gain the right answers. I must have been making some silly and repeating error.
     

    Attached Files:

    Last edited: Jan 20, 2009
  2. jcsd
  3. Jan 21, 2009 #2

    Gib Z

    User Avatar
    Homework Helper

    Hello tiam77, welcome to Physicsforums!

    Forum policy is for the helpers to not give help if you do not show us any work - Saying you tried something is good, show us what exactly you did. We can't help you if we can't see where you are going wrong?

    For the first one, is z a function or a constant?

    For the second one, the substitution seems fairly obvious. What did you try to use? Show us what you did!
     
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