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visits member for 2 years, 7 months
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Jul
26
comment prove the Laguerre–Gaussian equation
"derive equation"? What you mean? Usually equations arises somewhere in physical models, as it happens for many equations for special functions.
Jul
13
comment $\sum_{n=0}^{\infty} n \left( 0.5 \right)^n$
@DavidMitra Might help? There is a solution there!
Jun
23
comment Having problems understanding function table
@barakmanos Looks like that notation is kinda different, swap the $g$ and $f$.
Jun
9
comment Simplify this expression involving Gamma function
Is $a$ a natural number?
Jun
3
comment What is the primitive of $\tan(x)\arctan(x)$?
I don't think it can be expressed in primitive functions...
May
10
comment What is the upper bound for $\frac1n$ where $n$ is a prime?
Upper bound? $1/2$? Maybe you can provide more info.
Apr
27
comment Can't get the answer for months - complex number
Em... What? Can you be more specific, it doesn't looks like a clear question...
Apr
24
comment Is $\ \Large\pi^e$ rational?
@Jika: $e^\pi$ is a transcedental number, look the Gelfond's Theorem and $e^\pi = (-1)^{-i}$. So, looks like the $\pi^{e^\pi}$ is irrational and transcedental.
Feb
14
comment Compute the integral $\int\frac{e^x}{x}dx$
It cannot be integrated, it's a special function.
Feb
11
comment How to prove that Fibonacci number is integer?
@DanielFischer: That should be an answer!
Feb
11
comment How to prove that Fibonacci number is integer?
@JyrkiLahtonen: Maybe I was a bit unclear, I'm looking of proof with that Golden ratio formula.
Nov
9
comment How to approximate a function to Inegrate
Is $N$ and $A$ just an integers?
Sep
11
comment How to find this nice limit: $I=\lim_{t\to0^{+}}\lim_{x\to+\infty}f(x,t)$
Just in case: are there is $\arctan (t^\frac{3}{2})$ or $(\arctan t)^\frac{3}{2}$?
Jul
28
comment Can someone explain Gödel's incompleteness theorems in layman terms?
I recommend to read the "Gödel, Escher, Bach: An Eternal Golden Braid" by Douglas Hofstadter, I found it very, very interesting and, also, related to the topic. Surprised no one have recommend it yet...
Apr
29
comment How to simplify or factor this equation
What is $x(2)$? Is it a $x^2$ or something else?
Mar
27
comment $ \int_0^1 |f(x)-t| \, dx \le \frac{(1-t)^2+1}{2}$
Are you sure about the $t$ being there?
Mar
21
comment $\int_{-\infty}^{\infty}e^{-at^2}\cos btdt=?$
With $a < 0$ this integral does not converge on $(-\infty, \infty)$.
Mar
21
comment Infinite powering by $ i$
Can you share a Mathematica Notebook?
Mar
16
comment How to find $\lim_{x\to0^+}\frac{1 - \frac{2}{\pi} \arcsin(_{2}F_{1}(1/2, 1/2, 3/2, x^4))}{x^2}$?
@JavaMan: That's a hypergeometric function.
Feb
25
comment How do I solve this integral using complex analysis?
@Tom: So it has $x$ as a parameter?