Chip's user avatar
Chip's user avatar
Chip's user avatar
Chip
  • Member for 8 years
  • Last seen more than a month ago
5 votes
Accepted

Proof of an inequality in $\mathbb{C}$

5 votes

Maximum of $\int_a^b \frac{f(x)}{x}\,\mathrm dx$

4 votes

Prove $\frac{a_n}{S_n^2} \leq \frac{1}{S_{n-1}}-\frac{1}{S_n}$ for partials sums of a divergent series

4 votes
Accepted

Contour Integral of $\int\limits_0^{2\pi}\frac{d\theta}{1+a\cos\theta}$ for $a^2<1$ (textbook wrong?)

3 votes

Asymptotic behaviour of sum over the inverse japanese symbol

3 votes

Unconventional Inequality $ \frac{x^x}{|x-y|}+\frac{y^y}{|y-z|}+\frac{z^z}{|z-x|} > \frac72$

3 votes
Accepted

Solving a system of equations with variables in denominator.

3 votes
Accepted

Find the following limit by L'Hopital Rule: $\lim_{x\to 0} (1-x) ^{1/x}$

3 votes

Solving differential equation $y''(x)+Q(x)y(x)=0$

2 votes

Estimate of an integral

2 votes
Accepted

Integrate $\int_{0}^{2\pi}e^{\cos\theta}\cos(\sin\theta)d\theta$

2 votes

Is a substitution always required to change the limits of an integral?

2 votes
Accepted

limit of integral function

2 votes
Accepted

Which way should you run from the lions?

2 votes

Geometrical Description of $ \arg\left(\frac{z+1+i}{z-1-i} \right) = \pm \frac{\pi}{2} $

2 votes

Derivative of (1-t/m)^m

2 votes
Accepted

Question regarding on powers of a certain matrix

2 votes
Accepted

What does the iteration of this function approach as $n\rightarrow\infty$?

1 vote

Catenary Cable Problem: Timoshenko (2 solvers since last year only)

1 vote

Product of distants from 1 to the corner of n gonal inscribe inside a unit circle.

1 vote

Least value of complex expression

1 vote

Circumcenter of triangle

1 vote

Prove this inequality in complex domain (5)

1 vote
Accepted

Solving an asymptotic equation

1 vote

explicit formula for $a_n$ and $b_n$

1 vote

Criticize my math when I attempt to find the coefficient of $x^2y^6$ in the expansion of $(x+2y^2)^5$

1 vote

problem on a trapezoid having intersection of diagonals

1 vote

How do you deal with fractions in a binomial?

1 vote

$\displaystyle\lim_{x\to 0} {(\frac{f(x)}{x})} = 2$. Prove that the series $a_n=f(1)+f(\frac{1}{2})+...+(\frac{1}{n})$ is diverging to infinity

0 votes
Accepted

Which points of the curves-solution are such that the tangent pass through the origin?