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MathMajor
  • Member for 8 years, 8 months
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109 votes

What's your favorite proof accessible to a general audience?

15 votes
Accepted

How is $x \leq x^2$ false?

14 votes
Accepted

Infinite number of Derivatives

9 votes
Accepted

Can $y=\frac{e^\frac{t^4}{12}}{e^{\frac{t^3}{3}}}$ be simplified?

8 votes
Accepted

Evaluate $\int{\sin^3(x)\cos^2(x)}dx$

8 votes
Accepted

Inverse of $\tan^{2}\theta$?

8 votes

Are there ways to solve equations with multiple variables?

7 votes

Showing there exists just one $x \in \mathbb{R}$ such that $x^3 + ax + b = 0$

7 votes
Accepted

L'Hôpital's as $x$ tends to infinity

7 votes
Accepted

Simplifying an equation (circle)

6 votes

How do I simplify this?

5 votes

Differentiablility of a function

5 votes
Accepted

Write $(1^3 −1)−(2^3 −1)+(3^3 −1)−(4^3 −1)+(5^3 −1)$ using summation or product notation.

5 votes
Accepted

How to find this operators?

5 votes
Accepted

$\lim_{n \rightarrow \infty} \frac{1-(1-1/n)^4}{1-(1-1/n)^3}$

4 votes

Question on induction technique

4 votes
Accepted

How to find the derivative of $F(x)=\int_{x^2}^{4x^2} \sin \sqrt t\;\;dt$?

4 votes

Determine whether each of the functions $2^{n+1}$ and $2^{2n}$ is $O(2^n)$.

4 votes

Reducing "Quad Roots"

4 votes

If $f(n)$ is $O(g(n))$ and $g(n)$ is $O(f(n))$, is $f(n) = g(n)$?

4 votes
Accepted

Formula for $S_n$

4 votes
Accepted

True or false: For all subsets $ A $ and $ B $ of $ X $, if $ A \subseteq B $, then $ f[A] \subseteq f[B] $.

4 votes

Prove that $f(x)=x$ can have at most one solution if $f'(x)\ne1$

4 votes

Standard Indicator function?

4 votes

Strange solution for the integral

4 votes

$n! \le n^n$, $\forall$ $n \ge 1$.

4 votes

f and g are bounded . if 1/g is bounded, then f/g is bounded.

4 votes
Accepted

For which integral values of $x$ is $|x^2-9|$ a prime number?

3 votes

Looking for a simple proof of why you can't mathematically tune a piano

3 votes

How to prove this inequality $ x + \frac{1}{x} \geq 2 $

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