Jon's user avatar
Jon's user avatar
Jon's user avatar
Jon
  • Member for 12 years, 4 months
  • Last seen this week
19 votes
Accepted

Generalizing the trick for integrating $\int_{-\infty}^\infty e^{-x^2}\mathrm dx$?

10 votes
Accepted

Finding the power series for $y$ where $y + \sin(y) = x$

10 votes
Accepted

Applications of information geometry to the natural sciences

9 votes
Accepted

Chaos and ergodicity in hamiltonian systems

9 votes
Accepted

Stochastic interpretation of Einstein equations

8 votes
Accepted

how calculate integral $\int \dot{x} \; dx$

7 votes
Accepted

Trace of a differential operator

6 votes
Accepted

Why does $\int_{-\pi}^{\pi}\sin(nx)e^{inx}$=$-\pi i$?

5 votes
Accepted

Solving $-\chi''(\epsilon)+\Big[\epsilon^2+\frac{2F}{hw}\sqrt{\frac{h}{hw}}\epsilon \Big]\chi(\epsilon)=\mu\chi(\epsilon)$

5 votes
Accepted

Finding sum $\frac{1}{2} x^2 + \frac{1}{2} \frac{1}{3} x^3 + \frac{1}{4} \frac{1}{3} x^4 + ... $

5 votes

$y''\pm e^ty=0 \implies \mid \cup x_i \mid =? s.t. y(x_i)=0 $

5 votes
Accepted

Find eigenvalues of $x^2 \frac{d^2\phi}{dx^2} + x \frac{d\phi}{dx} + \lambda \phi = 0$ with boundary conditions $\phi(1) = \phi(b) = 0$

4 votes
Accepted

How to prove that the sequence $a_n = (1/n)^{1/n}$ converges?

4 votes
Accepted

Can't understand a simple wave equation matlab code

4 votes
Accepted

Calculate perimeter from parametric form with an ellipse?

4 votes
Accepted

Integral two solutions

4 votes
Accepted

Derivation in simple harmonic motion

3 votes
Accepted

Simultaneous Differential Equations

3 votes
Accepted

Dilogarithm asymptotics for an exponential parameter.

3 votes
Accepted

Projection of Gaussian in Spherical Coordinates

3 votes
Accepted

Sum of power series

3 votes

Book recommendations from basic algebra to precalculus?

3 votes

Solving non homogeneous differential equation

3 votes

Laplace of $x^2\frac{d^2y}{dx^2}$

3 votes
Accepted

Rittner equation

3 votes
Accepted

How to solve quadratic over square root of quartic equals constant?

3 votes
Accepted

Characteristics of a PDE

3 votes

Series with increasing factor inside the summation

3 votes
Accepted

how could i prove this (delta function representation)

3 votes
Accepted

Is there an analytical solution to this nonlinear ODE?

1
2 3 4 5
7