JasonM's user avatar
JasonM's user avatar
JasonM's user avatar
JasonM
  • Member for 7 years, 6 months
  • Last seen more than a month ago
22 votes

Prove that $4$ divides $3^{2m+1} - 3$

17 votes

What is the sum of the $81$ products in the $9 \times 9$ multiplication grid?

12 votes
Accepted

Using AM-GM Inequality (Arithmetic mean- Geometric Mean) Find the minimum value of $2x^2+\frac{1}{x^4}$

11 votes
Accepted

Is it true that the order of the group is a power of $2$ if every element has order $2$?

10 votes
Accepted

Factorial sum estimate $\sum_{n=m+1}^\infty \frac{1}{n!} \le \frac{1}{m\cdot m!}$

10 votes

How unique is $e$?

7 votes
Accepted

Can $b+c$ in the pythagorean triplets $(a, b, c)$ be a prime number?

6 votes

Why is this true $\frac{1-y^n}{1-y}=(1+y+y^2+...+ y^{n-1})$?

5 votes
Accepted

Limit $\lim_{x \to \infty}\left (1- \frac1x\right)^x = ?$

5 votes

Why does simplifying a function give it another limit

5 votes

Choosing Functions for the Squeeze Theorem

4 votes

Prime divisor of the form $4k+3$

4 votes

How to factorize a number into prime numbers

4 votes

Infinitely many squares of the form $3a^2 + 1$

3 votes
Accepted

Find $\lim_{x\to \infty}\left(\frac{n+2}{n-1}\right)^{2n+3}$

3 votes
Accepted

2 Weird questions

3 votes
Accepted

A finite extension with finitely many intermediate fields is simple

3 votes

Goldbach Conjecture Counterexample

3 votes
Accepted

Power Rule for Indefinite Integrals

3 votes

Find all functions that satisfy $f(\frac{x+4}{1-x}) + f(x) = x$

3 votes

Frequency of relatively prime pairs in all pairs

3 votes
Accepted

Calculus Improper Integral Convergence; Which is right: Limits or Areas?

3 votes

Divergence of $\sum\limits_{n=0}^{\infty} \frac{n^n}{n!e^n}$: fast proof?

3 votes

Proof about subgroups

3 votes
Accepted

There exist infinitely many primes $p \equiv 1 \pmod {2^n}$

2 votes

Dirichlet inverse of $(-1)^n$

2 votes

What's the correct way for proving by Well Ordering Principle that any positive integer can be expressed as a sum of powers of two?

2 votes
Accepted

Why do some rational functions approach the asymptote from the other side?

2 votes

Prove that $\sin x=[1+\sin x]+[1-\cos x]$ has no solution in $x\in \Bbb R$

2 votes

A problem related to sequence and series