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  1. E

    Nasty Integral!

    Hmm did it with mathcad but yeah it does something weird, it shouldnt be zero.its something like 19.563.
  2. E

    Nasty Integral!

    There should be no closed form result for this problem, so if you expand your series enough, you can get a 2 page answer as well.The answer is 0.
  3. E

    How do you know if there isn't a solution to a calculus optimization problem?

    The function representing the volume is monotonic, it doesnt have any critical points. V=50r in this case or V=b*50/2pi where b is one of the sides of the paper. It only means that the volume will grow unbounded because you can increase b as much as you want, (the condition for the other side...