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 Dec 27 awarded Yearling Nov 1 awarded Popular Question Jul 8 answered Database of unsolved problems in mathematics Dec 27 awarded Yearling Dec 8 awarded Caucus Sep 30 awarded Explainer Sep 26 comment Limits of two variable functions There are two r's in the numerator and one in denominator, after cancellation on one remains in the numerator. Jul 2 awarded Curious Mar 5 awarded Notable Question Dec 27 awarded Yearling Oct 14 comment find pdf from mgf for normal distribution.? Similar question math.stackexchange.com/questions/343930/… May 22 awarded Popular Question May 12 comment How to find the solutions of $x^3-x^2-x+1=0$ Since you know x=1, is a solution, divide the equation by x-1 to get a quadric eqation, solve that to get another two solutions. May 7 awarded Caucus Feb 10 awarded Notable Question Dec 27 awarded Yearling Oct 8 awarded Popular Question Jun 11 revised Simplify $\int \frac{1}{\sqrt{2-x^2}}\, dx$ constant of integration Jun 8 awarded Constituent Jun 8 awarded Caucus