AccidentalFourierTransform's user avatar
AccidentalFourierTransform's user avatar
AccidentalFourierTransform's user avatar
AccidentalFourierTransform
  • Member for 8 years, 5 months
  • Last seen this week
27 votes

Finding $\int_{-2}^8xf(x)dx$ given $\int_{-2}^8f(x)dx$

25 votes

Help to identify every equation in this meme?

23 votes
Accepted

Why solving a differentiated integral equation might eventually lead to erroneous solutions of the original problem?

10 votes
Accepted

If $\mathbf{ABC}$ non-singular prove that $\mathbf{A}$, $\mathbf{B}$ and $\mathbf{C}$ non-singular too

8 votes
Accepted

Is every series that matters a Taylor series?

6 votes

Two Dirac delta functions in an integral?

6 votes
Accepted

Is the following always prime?

5 votes

Can derivatives be defined as anti-integrals?

5 votes

Orthogonality of major and minor axes of an ellipse

4 votes

When does a function NOT have an antiderivative?

3 votes
Accepted

Find $S_{n}=\sum_{k=1}^{n}k!(k^2+1)$

3 votes
Accepted

How can you multiply unit vectors by differentials and get this result?

3 votes

Coefficients of the stirling's series expansion for the factorial.

3 votes

Convergence rate of $a_{n+1}=\ln(a_n+1)$

3 votes

If $f(x) = e^{-|x|}$, show that $f''(x) - f(x) = -2\delta(x)$ (in the sense of distributions)

3 votes

Geometric meaning of Berezin integration

3 votes

Trigonometric functions

3 votes
Accepted

Integral over Dirac's delta distribution with variable upper limit

3 votes
Accepted

How to find the potential function of this vector field?

3 votes
Accepted

In what sense does analyticity guarantee the following equality?

3 votes
Accepted

Using Plancherel's Theorem for Delta Function

3 votes

Solve a linear ODE with dirac delta

2 votes

Let $A$ be a $2 \times 2$ matrix such that $A^2=I$. Find trace and determinant

2 votes
Accepted

How to prove the divergence/convergence of the following series: $\sum_{n=0}^\infty \frac{\sqrt[3]{n}}{\sqrt[3]{n^4}-1}$?

2 votes

Can one define a cross product for functions?

2 votes

Integral functional equation.

2 votes

Fourier transform and convolution

2 votes

Given a Hermitian matrix $A$, prove that $(A-iI)$ is nonsingular

2 votes

When is the number of areas obtained by cutting a circle with $n$ chords a power of $2$?

1 vote

Sum of entries of Cayley table for $(\mathbb Z_n, \times)$