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Sep
28
revised Factoring a Cubic Polynomial
added 173 characters in body; added 81 characters in body
Sep
28
answered Factoring a Cubic Polynomial
Sep
28
comment Geometric Progression
@Debanjan: I suppose you have been asked if it is homework for earlier questions (hence your usage of word 'again'). Why don't you just mention that that is the case (from a test) and avoid getting questions like these ('is it homework')? In any case, why don't you also show some working? Test questions are like homework, in a way.
Sep
28
comment Party planning problem
This is clearly programming related. btw, this will be off-topic on cstheory.stackexchange.com as that site is for research level CS Theory questions. Stackoverflow is more suitable, IMO. btw, is this homework? What have you done so far?
Sep
28
comment Recurrence relation for $a_{n}$ where $6a_{n}$ and $10a_{n}$ are both triangular
+1 for the complete solution.
Sep
28
comment Geometric Progression
Is this homework?
Sep
28
comment a question about group (decomposition of conjugacy classes in normal subgroups)
Homework question about group?
Sep
28
revised Finding the limit of $\lbrace\sum_{n=1}^{k}\frac{1}{\sqrt{k^2 + n}}\rbrace_{k=1}^\infty$
added 173 characters in body
Sep
28
comment Finding the limit of $\lbrace\sum_{n=1}^{k}\frac{1}{\sqrt{k^2 + n}}\rbrace_{k=1}^\infty$
@Jarrod: Perhaps if you edit your question to show what you have so far, we can help further.
Sep
28
comment Finding the limit of $\lbrace\sum_{n=1}^{k}\frac{1}{\sqrt{k^2 + n}}\rbrace_{k=1}^\infty$
Right. Now in those two terms, can you rewrite it in the form $\frac{1}{\sqrt{something}}$?
Sep
28
answered Finding the limit of $\lbrace\sum_{n=1}^{k}\frac{1}{\sqrt{k^2 + n}}\rbrace_{k=1}^\infty$
Sep
28
comment Finding the limit of $\lbrace\sum_{n=1}^{k}\frac{1}{\sqrt{k^2 + n}}\rbrace_{k=1}^\infty$
Is this homework?
Sep
27
comment Recurrence relation for $a_{n}$ where $6a_{n}$ and $10a_{n}$ are both triangular
@Charles: You are welcome. Thank you for the nice problem.
Sep
27
answered Taking Seats on a Plane
Sep
27
comment Recurrence relation for $a_{n}$ where $6a_{n}$ and $10a_{n}$ are both triangular
@Americo: It is _60_a = 5n^2 + 5n blah.
Sep
27
comment Recurrence relation for $a_{n}$ where $6a_{n}$ and $10a_{n}$ are both triangular
@Hans: The numbers in the sequence are of the from $(n^2 + n)/12$, where $x = 2n+1$. So it could be anything.
Sep
27
answered Recurrence relation for $a_{n}$ where $6a_{n}$ and $10a_{n}$ are both triangular
Sep
27
revised Recurrence relation for $a_{n}$ where $6a_{n}$ and $10a_{n}$ are both triangular
added 138 characters in body; edited title; deleted 1 characters in body; added 1 characters in body; edited body
Sep
27
comment Recurrence relation for $a_{n}$ where $6a_{n}$ and $10a_{n}$ are both triangular
@Charles: You can change your question by giving the recurrence relation here and asking how it can be dervied. I will go ahead and edit your question.
Sep
27
comment Recurrence relation for $a_{n}$ where $6a_{n}$ and $10a_{n}$ are both triangular
What exactly do you mean by characterize? Is the recurrence relation given in your link to A180926 not sufficient?