Jean-Sébastien
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 Apr21 revised Evaluate the integral $\int \sin(x)\cos(3x^2)dx$ added 2 characters in body Aug8 revised How many $4$ digit even numbers have all $4$ digits distinct? added 1 character in body Apr11 revised Minimum number of combinations added 974 characters in body Apr9 revised Is my second equation right? Use Mathjax Apr9 revised Convert from base 10 to base 5 improved formatting Apr8 revised Convert from base 10 to base 5 added 142 characters in body Oct23 revised How to change to same units edited tags Oct15 revised Prove that $6$ divides $n(n + 1)(n + 2)$ edited tags Oct14 revised Determine convergence $\sum_{n=1}^\infty\left(\frac{2 n + 2}{2 n + 3}\right)^{n^2}$ deleted 1 characters in body; edited title Oct13 revised Coupon selecting problem added 1024 characters in body Oct7 revised Can you help me with a limit? Format, grammar and retagged Oct6 revised How can we directly see that the number of random walks starting and ending at the origin is ${n\choose n/2}^2$? added 220 characters in body Sep21 revised 10 children divide into 2 teams each. How many divisions possible? added 319 characters in body Sep21 revised 10 children divide into 2 teams each. How many divisions possible? added 5 characters in body Sep20 revised Can you please help me understand a part of this proof? rolled back to a previous revision Sep20 revised Let $S$ be a subset of $\Bbb R$ of finite Lebesgue measure. rolled back to a previous revision Sep20 revised How can I explain this formally? rolled back to a previous revision Sep20 revised Any hint for this measure theory problem? rolled back to a previous revision Sep19 revised Symmetry functions and integration added 8 characters in body Sep18 revised Does this hold: $\sum_{n=1}^\infty \sum_{k=1}^n 2^{-n}=\sum_{k=1}^\infty \sum_{n=k}^\infty 2^{-n}$? added 46 characters in body