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May
21
asked orthogonal polynomials and quadrature formulae
May
17
asked Numerical solution of non-linear differential equation with MATLAB
May
5
asked Integral $ \int_{0}^{\infty} \frac{2axdx}{(x^{2}+a^{2})(e^{2\pi x}-1)} $
Apr
19
asked Could Fibonacci numbers be related to Riemann zeros?
Apr
18
asked a doubt with the series $ \sum_{n=0}^{\infty}e^{-nx} $
Apr
15
asked asymptotics of this sum $ x \to 0 $
Apr
4
asked Numerical method for indefinite integral
Mar
28
asked non-smooth minmal surfaces and differenteial equations
Mar
26
asked exercise on $ L(0,1) $ and functional analysis
Mar
23
asked laurent series of a function defined by an integral
Mar
16
asked Real roots plot of the modified bessel function
Mar
10
asked fractional derivaitve of logarithm function $x^ {a} log(x) $
Feb
26
answered Show that $f(z)=\sum_{n=-\infty}^\infty \frac{1}{(n-z)^2}$ converges uniformly on compact sets in $\Bbb C - \Bbb Z$.
Feb
19
asked minimal surface from a variational problem
Feb
18
asked A variational problem with a lagrangian , what is the lagrangian?
Feb
18
asked variational problem: obtain the lagrangian from the PDE equations of motion
Feb
13
answered Find solution for the following system: $x'=y^3-4x$ , $y'=y^3-y-3x$
Feb
12
asked second degree congruence solution $ f(x) \equiv 0 \ ( \text{mod} \ 2) $
Feb
9
asked delta function on a complex number
Feb
7
asked Sum of a power series with a parameter