Skip to main content
eyedropper's user avatar
eyedropper's user avatar
eyedropper's user avatar
eyedropper
  • Member for 9 years, 7 months
  • Last seen more than a month ago
  • Serbia, Belgrade
12 votes
Accepted

$\lim_{n\to\infty}\int_{-\infty}^{\infty}{\sin(n+0.5)x\over \sin(x/2)}\cdot{\mathrm dx\over 1+x^2}=\pi\cdot{e+1\over e-1}$

6 votes
Accepted

Why the $\lambda$-generalized eigenspace is invariant?

4 votes
Accepted

Notation: What does $\sum_{i>j}$ mean?

3 votes
Accepted

Investigating integrals of the form $\int \frac{f(x)dx}{1+e^x}$

2 votes
Accepted

'Canonical' form of permutations, product of transpositions

2 votes
Accepted

Efficient way to show Graph is a tree in proof

2 votes

If $\sum_j a_j b_j \ge \sum c_j b_j$, then $a_j \ge c_j$.

2 votes
Accepted

Find the Fourier series of $f(x) = \frac{a_0}{2} + \sum_{k = 1}^{n}(a_k\cos{kx} + b_k\sin{kx})$

1 vote
Accepted

asymptotic analysis to solve differenial equation

1 vote

H and K are subgroups of G then H=K

0 votes

rate of change of area of circle per second w.r.t. radius

0 votes

Find the eigenvalues of the linear transformation

0 votes

Fourier transform of $\frac{1}{\|x\|} \chi_{B_1(0)}(x)$

0 votes
Accepted

Finding the volume of a function rotating around the x-axis. y = xe^(-x^2)

0 votes

Computing $\frac{d^n}{dx^n} ( f(x)^m) \Big|_{x=0}$ if $\frac{d^n}{dx^n} f(x) \Big|_{x=0}=0$ for $n$ odd

0 votes

Tensor manipulation involving Levi-Cevita tensor