Recent content by oasi

  1. O

    Can this method be applied to any ODE with a regular singular point at $x=0$?

    How can we solve this ODE with series http://img841.imageshack.us/img841/8682/80858005.png
  2. O

    What Methods Solve This Initial Value ODE?

    how can we solve this ODE? http://img818.imageshack.us/img818/3966/59962234.png
  3. O

    What Values of X Result in Real Double Roots for This Polynomial?

    can you look this question and help me? http://img252.imageshack.us/img252/2720/59248444.png
  4. O

    Homogeneous linear ODEs with Constant Coefficients

    do you have a idea about it?can you help me http://img17.imageshack.us/img17/1156/18176658.png
  5. O

    An Elegant Solution to a Tricky Integral

    why we chose u=1+\sin(2x)
  6. O

    Bob's 9 Minute Hourglass Challenge

    yes +1
  7. O

    Solving Improper Integral Challenge Problem

    how can you solve this hard problems ,i'm lovin it
  8. O

    What are some intriguing integrals to explore?

    i can't get it
  9. O

    An interesting series divergence

    i'm agree with krizalid
  10. O

    Integrable Function on $[0,1]$: Proving a Limit

    i couldn't imagine ,how to solve this
  11. O

    Infinite Series 2: More Fun Problems!

    our teacher asked to us 4. problem
  12. O

    Integral with floor and ceil function

    this one is very hard
  13. O

    Find $f_n$ of Integral of x^{-x}

    i can't understand 3. line
  14. O

    Integral Calculator: $$\int_a^b\frac{dx}{\sqrt{(x-a)(b-x)}}$$

    if we miss this point ,we are going to do big mistake
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