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Don't have much time these days...


Jun
26
answered Evaluating a sum with Mobius function
Jun
26
answered Doubt on locus of a median point
Jun
26
answered Inequality for harmonic means
Jun
17
answered Proving that a sequence is monotone and bounded
Dec
14
answered Find a number leaving a particular remainder with 3 different numbers
Nov
29
answered Find $a_{n+1}=\frac{a_n^2+1}{2}$ in terms of $n$.
Nov
29
answered Show that $n-kl$ is a perfect square
Nov
29
answered Nspire CAS spitting out a wrong answer?
Nov
29
answered What is the value of $ a_{2009}$
Nov
29
answered Finding the radius of convergence of the given power series.
Nov
29
answered How to show $(mn)!$ divides $(m!)^n$?
Nov
29
answered Proof that the limit of a sequence is equal to the limit of its partial sums divided by n
Nov
29
answered Number of solutions in a given interval
Sep
14
answered how to prove $a^{p-1} + \frac{p-1}{2\cdot 1}a^{p-2} + \frac{(p-1)(p-2)}{3\cdot 2\cdot 1}a^{p-3} + … + a \in \mathbb{Z}$?
Aug
7
answered Limit of certain recurrence relation
Jul
27
answered Lattice Paths from $(1, 1) \to (x, y)$
Jul
12
answered Lights Out Variant: Flipping the whole row and column.
May
19
answered Prove that $(1+1/x)^x$ is concave for $x>0$
May
17
answered Identity with Bernoulli numbers: $\sum\limits_{k=1}^{n}k^p=\frac{1}{p+1}\sum\limits_{j=0}^{p}\binom{p+1}{j}B_j n^{p+1-j}$
May
17
answered Using the hypothesis $\frac{1}{a}+\frac{1}{b}+\frac{1}{c}=\frac{1}{a+b+c}$ to prove something else