Skip to main content
Superunknown's user avatar
Superunknown's user avatar
Superunknown's user avatar
Superunknown
  • Member for 3 years, 1 month
  • Last seen this week
4 votes

Solving an eigenvalue problem on a circular domain

2 votes

Algorithm behind Sin Function

2 votes

Solving 3rd Order ODE by Reduction of Order

1 vote

Assessing stability or instability of a system of equations with complex eigenvalues

1 vote

Calculation of $\int \frac{e^{\pi z}}{(z - (\frac 1 2 + \frac i 2))((z - (-\frac 1 2 - \frac i 2)))}$

1 vote
Accepted

How do I know which function to substitute the variable when solving problems by the "Integration by substitution" method?

1 vote
Accepted

Using Plancherels formula and Fourier-transform table to solve $\int_{-\infty}^\infty e^{-|t|}\frac{\sin t}{t}dt$

1 vote

Solving $x^3-7x^2+14x-8-\frac12\sin x=0$

1 vote

Method for proving continuity for a complex function

1 vote

Classifying the critical points a linear autonomous system of equations

1 vote

Calculate $\int_{|z|=1}\frac{e^{2z}}{z^2}dz$

1 vote

Find the z-transform of $n^2 3^n$

1 vote

Is the following Fourier Transform in cylindrical coordinates correct?

1 vote
Accepted

A inhomogeneous heat equation with mixed conditions

1 vote

A really difficult heat-diffusion problem

1 vote

When are the coefficients of Laplace equation based on Fourier series?

0 votes

How to calculate how fast a set of numbers goes towards zero?

0 votes
Accepted

Find the derivative of a piecewise constant function

0 votes

Solving the Euler Lagrange equation for the functional $L(y)=\int_{-1}^7\sqrt{1+y'^2} dx$

0 votes

How to prove that two PDE's are related?

0 votes

What is the difference between a Hilbert space and Euclidean space?

0 votes

Physical Meaning of Airy dispersive PDE

0 votes

Which properties does a critical point have if the Jacobian determinant is $0$ and thus no characteristic equation exists?

0 votes

How to find the laplace transform of the function $f(t)= \sqrt{t}\sin(t) $

0 votes

Solve $x^5=\frac{133x-78}{133-78x}$

-1 votes

Choosing $f(x)$

-2 votes

Find the solution to the given derivative of the product: $\big(\cos{x}\delta{x}\big)^{(k)}$