# André Nicolas

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# 245,989 Reputation

245 today
 +80 9 mins ago 9 events Conjectures which cant be right or wrong +30 13 hours ago 3 events Value of divergent series? +25 8 hours ago 2 events Finding Survival Function given hazard rate +25 9 hours ago 2 events Find the area of the region inside r=a and outside r=a(1-cos θ). +20 10 hours ago 2 events probability, transformation on Random Variable +20 14 hours ago 2 events A rectangle with base on the x-axis has its upper vertices on the curve y=12-x^2 . Find the maximum area of such a rectangle. +15 1 hour ago 2 events Interest Accumulation - Geometric Sequence +10 5 hours ago upvote Typical urn conditional probability question +10 6 hours ago upvote Limit problem in book: $\lim_{n\to\infty}\frac{1+\sqrt{2}+…+\sqrt{n}}{n^{3/2}}$ +10 7 hours ago upvote Number of solutions for $\frac{1}{X} + \frac{1}{Y} = \frac{1}{N!}$ where $1 \leq N \leq 10^6$
55 yesterday
 +15 21:29 accept application of the sampling distribution of x +10 14:13 upvote Perfect squares +10 13:24 upvote Foundation for analysis without axiom of choice? +10 09:39 upvote Functional equation book for olympiad +10 03:39 upvote Convergence of subsequences
245 2 days ago
 +35 21:17 4 events Probability of tossing regular coins 4 times in a row +30 14:57 3 events for what integers $x$ do there exist $x$ consecutives integers, the sum of whose squares is prime? +25 08:49 2 events Card probability +20 18:40 3 events Determine if $-42$ is a quadratic residue of $mod(61)$ +15 20:18 2 events monotonicity of $\sum_0^n x^i$ for odd $n$ +10 20:02 2 events $p$ divides the sum of the quadratic residues $\bmod p$ +10 18:19 upvote A generating function where the coefficient of $x^r$ is $2^r$ +10 17:56 upvote The game of craps and dice +10 17:56 upvote Partitions of a set into three parts +10 17:56 upvote probability distribution with discrete random variable +10 17:56 upvote test of symmetry with respect to the line $y=2x$ +10 16:16 upvote Calculate the expected value of $Y=e^X$ where $X \sim N(\mu, \sigma^2)$ +10 12:54 upvote Proving convergence of a recursively defined sequence +10 11:58 upvote Sum of squared quadratic non-residues +10 06:13 upvote Addition of Binomial Coefficients +10 04:06 upvote History of infinite series representations of $\sin(x)$ and $\cos(x)$ +10 01:52 upvote Easiest and most complex proof of $\gcd (a,b) \times \operatorname{lcm} (a,b) =ab.$ 21:10 2 events Prove that $7^{100}+3^{10}=8^{100}$ or $7^{100}+3^{10}<8^{100}$ 18:51 5 events Hint in Proving that $n^2\le n!$
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