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Way to infinity
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13 votes

Sum of odd numbers always gives a perfect square.

8 votes

Proving the lack of memory property of the Geometric distribution

5 votes

How can $|x|= -x$, when $x<0$?

5 votes
Accepted

See if "7<4 implies 7 is ..." Is the following conclusion valid?

4 votes
Accepted

Can someone please simplify this, please.

3 votes

Is $A\cup B=A\cup \{B\cap A^c\}$?

3 votes

limit $\lim_{x\to-2}\frac{\sqrt[3]{x - 6}+2}{x + 2}$

3 votes

how to solve factorial involving multiplication

3 votes

PDE self study background required

2 votes

Complex number trigonometry problem

1 vote

does a formula for $a^2 + b^2$ exist?

1 vote

Basic math question

1 vote

Sum of Consecutive Integers

1 vote
Accepted

$\int_{-\infty}^{\infty} \frac{1}{2\pi} \exp\{ -\frac{1}{2} ((y-x)^2 + x^2) \} dx$

1 vote

How to prove $(a-b)^3 + (b-c)^3 + (c-a)^3 -3(a-b)(b-c)(c-a) = 0$ without calculations

1 vote

Question about complex numbers

1 vote

Calculate simple expression: $\sqrt[3]{2 + \sqrt{5}} + \sqrt[3]{2 - \sqrt{5}}$

1 vote

Problem on Real Numbers

1 vote

Is a decimal with a predictable pattern a rational number?

1 vote

Partial Fraction Decomposition.

0 votes

Can I do this kind of process with a pure math function?

0 votes

Simplify the expression : $\tan(\theta) +2\tan(2\theta) +2^2\tan(2^2 \theta) +\cdots +2^{14} \tan(2^{14}\theta) +2^{15} \cot(2^{15} \theta)$

0 votes
Accepted

Help in simple probability question

0 votes
Accepted

If $(n^2-n) $ is divisible by m and I have given the value of m , how can I find the value of n where n<m?

0 votes

Whats the solution of this problem

0 votes

Ratios and Fractions

0 votes

Graphs, Hamiltonian graphs, nodes... don't know topic name