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Modeling with first order linear differential equations

  1. Sep 10, 2012 #1
    1. The problem statement, all variables and given/known data
    uploaded file (Problem 5)


    2. Relevant equations
    uploaded file


    3. The attempt at a solution
    Ok so I think I have the correct answer but the problem is I dont know how to solve for the actual answer with 2 equations which one do I plug into? Sorry for all the erasing!
     

    Attached Files:

  2. jcsd
  3. Sep 10, 2012 #2
    Oh an the 1400000 is suppose to be there sorry it is so light and I solved the t = 71.7994 using wolfram.
     
  4. Sep 11, 2012 #3
    Uggg no replies, I guess my problem was too long or something?
     
  5. Sep 12, 2012 #4
    Can someone please help me out I dont think it is too outrageous I have already done the work it is quite literally just plugging and playing from here my question simply is first did I get the set up right and if I did then what do I plug in at the end?
     
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