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Blitzer
  • Member for 5 years, 4 months
  • Last seen this week
6 votes
Accepted

if two computers are playing tic-tac-toe, but they are choosing their squares randomly, what is the chance for X to win?

6 votes

Is there any website/software that let's me compare two mathematical statements and let me know if both are equivalent?

5 votes

Solving $a^3 - 33 ab^2 = -217$ and $3a^2 b - 11b^3 = 18$?

4 votes
Accepted

Finding $\vec b$ from $\vec a \times \vec b$ , $\vec a$ and $\alpha=\angle(\vec a;\vec b)$ using only vector algebra.

4 votes

Could Someone Please Verify My Proof? (fun with two primes)

4 votes
Accepted

How to proceed solving $(7+4\sqrt3)^m+(7-4\sqrt3)^m=14$?

3 votes
Accepted

Easy way to prove $\frac{2^n+1}{5^n+1}\gt\frac{2^n}{5^n}$ for all $n\gt0$

3 votes

Show that $\prod_{i=1}^{n} r_i = (−1)^{n−1}$ and $\sum_{i=1}^{n} r_i = 0.$

3 votes

Gaussian integral with a sine in the exponential

3 votes
Accepted

If $(a+b)(a+c)(b+c)=8abc$ prove $a=b=c$

3 votes
Accepted

About the inequality $\sum_{i=1}^{n}\frac{\frac{1}{x_i}+x_{i+1}}{\sqrt{\frac{1}{x_i}+x_i}}\geq n\sqrt{2}$

3 votes

How to produce an $n \times n$ matrix from an $n^2 \times 1$ vector?

3 votes
Accepted

Weird relation between bitwise 'AND' and 'OR' Operations.

2 votes
Accepted

Maximization Of Multivariable function

2 votes
Accepted

When is it OK to cancel differentials?

2 votes
Accepted

Contradicting Results of Complex Number Product

2 votes

How to place optimally four electrons on a sphere?

2 votes

derivative of $\left| x^x \right|$ in the entire domain?

2 votes

Why does the below process for a 4x4 grid with consecutive numbers 1-16 yield the magic constant 34?

2 votes

Limit of a sequence with logarithm and square root

2 votes

Is there any special relation between squared root of sum of squares and sum of the values themselves?

2 votes

Functional equation $f(px)+p=[f(x)]^2$

2 votes

the point to which everyone would have the shortest distance

2 votes

How to prove $\sum_{1 \leq i,j \leq n} {\frac{x_i x_j}{x_i^2+x_j^2}} \geq 0$ without using integral

2 votes

Big $O$ notation on both the sides of equality

1 vote

Different results obtained for $\int e^{-x}\sin x \mathrm dx$ using formula and using by parts.

1 vote

Inequality. $\frac{1}{16}(a+b+c+d)^3 \geq abc+bcd+cda+dab$

1 vote
Accepted

Limit involving multiple factorials

1 vote

Evaluating $\sum_{t=0}^{1000}(-1)^t \binom{2000}{2t}$

1 vote

$\int_{0}^\pi \frac{\sin(nx)}{\sin x} dx$