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seen Dec 12 '12 at 9:37

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awarded  Popular Question
Aug
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awarded  Popular Question
Jul
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awarded  Curious
Dec
4
comment Cosine series of $x^3$
We're probably supposed to divide $a_n$ into $a_{2m}$ and $a_{2m-1}$ and then proceed, but I'm still not able to get in the form required.
Dec
4
revised Cosine series of $x^3$
added 131 characters in body
Dec
4
comment Cosine series of $x^3$
Not homework specifically, just practicing for an exam. Actually we're supposed to 'show that' the cosine series is equal to some particular series they've shown. I'm not able to get it into that form. I'll put that required series in the answer.
Dec
4
asked Cosine series of $x^3$
Dec
3
comment Sine series of $\pi/2$
You're right, I just updated. Okay I'm beginning to figure this out. $pi/4$ is even in all intervals. $sinx$ is even in $(0,\pi)$. So their product will be even, hence I'll be able to find a sine series. Is this correct?
Dec
3
revised Sine series of $\pi/2$
added 142 characters in body
Dec
3
asked Sine series of $\pi/2$
Dec
1
asked Recurrence relation for the number of ternary trings containing 2 consecutive zeros vs not containing
Nov
30
accepted Prove that $2^k > k^3 $ for all $k\ge10$
Nov
30
asked Prove that $2^k > k^3 $ for all $k\ge10$
Nov
27
comment Big Oh notation of $7x^2$, confused
@Andre and Snowball: Okay, that makes sense. Wonder why this fact isn't clearly explained in the example that $O(x^3)$ isn't the most 'efficient' Big Oh notation for $7x^2$. And I've seen this example in 2-3 different places.
Nov
27
comment Big Oh notation of $7x^2$, confused
I'm studying it under a course called Discrete Mathematics for Computer Science, hence I tagged it such.
Nov
27
awarded  Editor
Nov
27
revised Big Oh notation of $7x^2$, confused
added 2 characters in body
Nov
27
asked Big Oh notation of $7x^2$, confused
Nov
24
awarded  Scholar
Nov
24
accepted Integrating using Laplace Transforms