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Jul
16
comment How to fill in these steps to evaluate this Gaussian integral?
Cool, thanks. I'll keep playing with this and see if I can use this to get the general case.
Jul
13
revised How to fill in these steps to evaluate this Gaussian integral?
added 276 characters in body
Jul
13
comment How to fill in these steps to evaluate this Gaussian integral?
I know for $\mu=0$, the sum is zero. But how can we get the expression even for $\mu=0$?
Jul
13
asked How to fill in these steps to evaluate this Gaussian integral?
Jul
2
awarded  Curious
Jul
2
comment Units of a log of a physical quantity
You reasoning is flawed. Different units can be multiplied/divided but they cannot be added/subtracted. For example, you can divide meters by seconds and get meters per seconds but you cannot add seconds+meters. That is why taking the log of a unit doesn't make sense because log(1+x) = x-x^2/2+x^3/3... So how can you add sec-sec^2+sec^3...?
Jun
12
reviewed Approve suggested edit on Can a coin with an unknown bias be treated as fair?
May
12
answered College Math Competitions
May
3
answered Prove that integral is independant of its parameter
Apr
30
awarded  Yearling
Apr
4
comment Math resources for electrical engineering?
@Pacerier Because reviews are personal opinions and some people are bound to genuinely dislike something no matter what others may think of it. In this case, some people think that Kresyszig is bad for first-time-learning-something but excellent for later reference/quick review and hence the "bad reviews". In my opinion, it is excellent for both because I have used it for both. An excellent introduction to basic ODEs/PDEs, linear algebra, numerical analysis, Fourier analysis, Numerical PDEs. It has helped me with graduate courses and exams too later on.
Mar
26
reviewed Leave Open With rows have a -1 in its third column? (matlab)
Mar
26
reviewed Close Infinite chessboard question
Mar
21
answered infinity, p2 and p1 Norm and its associated unit ball that has negative y values
Mar
21
comment infinity, p2 and p1 Norm and its associated unit ball that has negative y values
The point ball is the set of all the points whose norm is 1 meaning all $x$ such that $N(x)=1$. So for example using standard Euclidean norm, $N(1)=1$ AND $N(-1)=1$. Therefore here is a negative number included in the unit ball. The unit ball is NOT composed of the norm values themselves.
Mar
20
answered What is the sum of $1^4 + 2^4 + 3^4+ \dots + n^4$ and the derivation for that expression
Mar
16
comment What is wrong with this method for a rotated and shifted parabola?
@Rohinb97 Check out my addendum.
Mar
16
revised What is wrong with this method for a rotated and shifted parabola?
added 1546 characters in body
Mar
16
reviewed Close Eigenvalues appear when the dimension of the Prime Index Matrix is a prime-th prime. Why?
Mar
15
revised What is wrong with this method for a rotated and shifted parabola?
added 22 characters in body