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User1234
  • Member for 9 years, 2 months
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11 votes

Complex solutions of a quintic equation: $z^5+4\overline z^3=0$

6 votes

Sequences $x_{n+1}=\frac{x_n+y_n}2 $ and $ y_{n+1}=\frac{2x_ny_n}{x_n+y_n}$

4 votes
Accepted

Find a and p in the given question

3 votes

Calculate angle EZB in the below drawing.

3 votes
Accepted

Finding the number of points at which $f(x)=[n+p\sin x]$ is not differentiable

3 votes

Non-linear system of equations over the positive integers — more unknowns than equations

2 votes
Accepted

Integrating $\int \log(\tan(2x)) dx$

2 votes
Accepted

Find the distance traveled along a straight line with velocity equation given.

2 votes

Evaluate $ \int _{ 0 }^{ 1 }{ \ln\left(\frac { 1+x }{ 1-x } \right)\frac { dx }{ x\sqrt { 1-{ x }^{ 2 } } } }$

2 votes
Accepted

Indefinite integration using substitution

2 votes
Accepted

If $α,β,γ$ belong to ${1,w,w^2}$ then how is number of triplets satisfying $|(aα+bβ+cγ)/(aβ+bγ+cα)| = 1$ equal to $9$?

2 votes
Accepted

Vectors (GCSE/High school)

2 votes

Is $(-\infty, 1]\cup [2,\infty)$ closed set

2 votes

First order non-linear ordinary differential equation containing $e^x$

2 votes
Accepted

Determining differentiability of $h(x)= [\sin^3 x ]+\{\sin^{1/3}x\}$

1 vote

Is $\lvert\sqrt{x}\rvert^2$ equal $\lvert x\rvert$?

1 vote

How to find the plane with given 2 vectors?

1 vote
Accepted

If $|z + \frac{1}{z}| = a$ where $a$ is a positive real number then why is $\frac{-a+\sqrt{a^2+4}}{2}\leq\lvert z\rvert\leq\frac{a+\sqrt{a^2+4}}{2}$?

1 vote

Integration of $\frac{f'(x)}{f(x)}$?

1 vote

Is this limit solution $-∞$?

1 vote

How to solve this equation? $ y'' + y = 4xe^x $

1 vote
Accepted

How can I find $\Im(\log(1-e^{inx}))$

1 vote

should I also include the interval $\pi/4$ and $-\pi/4$

1 vote

Simple Capacitors Circuit

0 votes
Accepted

how to compare slope of two lines and find the angles in 3d

0 votes

Evaluating a limit $\lim_{x\to 0}\left\{\dfrac 2{x^3}(\tan x- \sin x )\right\}^{2/x^2 }$

0 votes

Is $\frac{2}{π}(\sin t+\cos t)$ the same as $\frac{4}{π\sqrt2}\sin\left(t+\frac{\pi}{4}\right)$?

0 votes

Roots for a cubic equations

0 votes
Accepted

Inserting parentheses to produce different values

0 votes

Sketching a set in the Complex plane.