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seen Jul 30 '13 at 12:40

Jun
26
awarded  Yearling
Jul
12
comment Show a PDE satisfies a ODE
The second term of the answer is $\theta^\prime \omega + \theta + \omega^\prime$. However, $\theta^\prime$ seems undefined because $\theta$ is a function of two variables, $x$ and $t$. So I do not know what the ODE really represents. Unless $x(t)$?
Jul
12
answered Confused between multiple representations of Fourier Series' formula
Jul
11
revised Laurent series expansion of a function
deleted 1 characters in body
Jul
11
answered Laurent series expansion of a function
Jul
11
answered Laurent series expansion of a function
Jul
11
answered How to calculate what matrix will transform specified points to other specified points
Jul
11
comment Green's Theorem Bounded by Triangle
There are several Green's theorems. Some specification which one is expected to be used would help.
Jul
11
comment Optimizing a meal based on the nutrients in the foods in it
Maybe try Simulated Annealing as an alternative optimization method, if GA does not work for you.
Jul
9
comment Chain rule question
because $2vy$ should have been $2uy$.
Jul
9
comment Product of Sums of Bernoulli variables
Do you mean sums of products? If so, pls change title.
Jul
9
answered Find maximum likelihood estimator, trick?
Jul
8
comment Uniform grid on a disc
I don't understand you question: uniformity is a property of the grid itself, not of the surface to which it is applied. Or do you mean a conformal transformation like between the complex z- and w- planes?
Jul
8
answered n-correlation function.
Jul
8
answered Is it possible to have multiple decimal points in a number?
Jul
8
answered Prove that, if $0 < x < 1$, then $(1+\frac{x}{n})^n < \frac1{1-x}$
Jul
8
comment Does $\int e^\frac 1x \, \mathrm dx$ has a closed form?
Yes, solution is in terms of exponential integral function Ei(), which is tabulated. Integral of that function, you will need to term by term, after expanding Ei() in a series.
Jul
8
awarded  Commentator
Jul
8
comment Angle in a triangle with bisectors
So what is your question?
Jul
8
answered Does $\int e^\frac 1x \, \mathrm dx$ has a closed form?