Fabian

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296 Answers

newest activity votes
1
Circumference of the ellipse, elliptic integrals, and WolframAlpha
15
Infinite powering by $ i$
7
Is this a dirac delta function?
8
Fun calculus problem I can't seem to solve
2
Help manipulating a sum
1
2nd order implicit derivative
1
solving:$\sqrt{\frac{1+\cos 4x}{2}}=\frac{1}{\sqrt{2}}$
2
Delta Function Integration
0
Upper Bounding an exponential integral with complex terms
1
Determinant of a block matrix with $\mathrm{Id}$ and $0$ in the diagonal
2
Expectation and variance of this stochastic process
4
Partial differential equation with chain rule
0
Green's function for $\frac{d^2}{dx^2} + \frac{1}{4}$
2
A standard quadratic minimization problem
0
Trigonometric Substitution - Arc Length
1
improper integral equal to 1
1
Orthogonal matrix Q of A such that $Q^T A Q$ is a diagonal matrix
2
Fourier transform of product
0
Why do Bessel functions of the first kind come up in the following 2-dimensional Fourier transform?
1
Convergence radius of $\log(\Gamma(\exp(x)))$?
1
Parameterized curve describing trajectory of thrown object
1
Existence Energy of Wave Equation
2
Characteristic function as limit of integrals.
2
Integral. $\int_{0}^{s}{\lambda \cdot |t|^{q-2}\cdot t\text{dt}}$
1
Integration on the unit sphere
2
A problem in Probability
0
Find the extremal on the unit disc
1
I tried to solve this problem but I can't.please help me
2
$f(y) \leq f(x)+\nabla f(x)\cdot (y-x) $ and $f(x)\geq 0$ implies that $f$ is constant.
0
Show that $\mathbb{R}/\mathbb{Z}$ is isomorphic to $\{e^{i\theta} : 0 \le \theta \le 2\pi \}$
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