1. The problem statement, all variables and given/known data Hello, I'm new here and it seems that this place would be the right place to post, well, I'm just starting up with Integral Calculus, and I think I'm stucked up with integrating fractions like this one. Integral of 3/t^4 dt from 1 to 2 2. Relevant equations yeah I mention ot above, oh, one more example, integral of x^2+1 all over sqt of x dx from 1 to 2 3. The attempt at a solution I'm quite stucked up! :( Thank you!