Recent content by rn315656

  1. R

    Probability question about exponential distribution

    \int \sqrt{\frac{x^4-1}{x^6}}dx=\int \sqrt{\frac{1}{x^2}-\frac{1}{x^6}}dx
  2. R

    How to evaluate this indefinite integral?

    test! The quadratic formula is http://texify.com/$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$