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Botond
  • Member for 8 years, 8 months
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  • Hungary
7 votes
3 answers
2k views

Bernoulli's inequality for rational exponents

5 votes
5 answers
476 views

Can the inequality $\frac{a+b}{c} + \frac{b+c}{a} + \frac{c+a}{b} \geq 6$ be proved with differentiation? [closed]

4 votes
1 answer
154 views

What's the expected value of working modules?

3 votes
2 answers
11k views

Double and triple integrals - does the order of integration matter? What does f(x,y,z) "do"?

3 votes
4 answers
216 views

(-8)^(4/3) is equals with 16 or (-16)*(-1)^(1/3)?

3 votes
2 answers
158 views

How to solve this system of logarithm equations?

2 votes
2 answers
103 views

How to prove this limit properly?

2 votes
3 answers
1k views

Is there a correct mathematical way to prove the arc length integral from the pythagorean theorem?

2 votes
3 answers
166 views

Taking the limit of an implicitly defined function

2 votes
2 answers
1k views

General solution to $\frac{\partial u}{\partial x}+xy \frac{\partial u}{\partial y}=x^2$

2 votes
0 answers
28 views

Prove that $f(\alpha)=\sin^{-1}(n\sin(\alpha))+\sin^{-1}(n\sin(\varphi-\alpha))-\varphi$ has an extremum at $\alpha=\frac{\varphi}{2}$

1 vote
2 answers
501 views

Equivalent definitions of convexity

1 vote
0 answers
75 views

Derivatives of the eikonal

1 vote
1 answer
77 views

Mathematically correct way of using the generator functions

1 vote
1 answer
132 views

Prove that $g(x)=\sqrt{x}$ is not an integral function on $[0,1]$.

1 vote
0 answers
38 views

On a normed space if $\|u+v\|=\|u\|+\|v\|$ then $\forall s,t \geqslant 0$ we have that $\|su+tv\|=s\|u\|+t\|v\|$ [duplicate]

1 vote
2 answers
1k views

How to rotate a vector by a given angle about a given axis

1 vote
0 answers
68 views

Differential equation - How to solve it?

1 vote
0 answers
354 views

Visualizing the Fourier and Laplace transform

1 vote
1 answer
222 views

Integral $\int_0^{\infty} \frac{\sin^2(x)}{x^2(x^2+1)} dx$ using Feynman method. [duplicate]

1 vote
2 answers
102 views

Prove that all odd derivate of $\tan(x)$ at $x=0$ is at least $1$.

0 votes
3 answers
122 views

Integral in physics - how to evaluate it?

0 votes
0 answers
28 views

Why can I substitute $a=0$ if I've set $a<0$ before?

0 votes
0 answers
213 views

When can I use the Chió pivotal condensation?

0 votes
1 answer
104 views

Solutions to a differential equation

0 votes
1 answer
461 views

How to solve a linear differential equation with Green's function?

0 votes
1 answer
77 views

Is there an $\mathbb{R}^2 \to \mathbb{R}$ function with the following (limit) property?

0 votes
2 answers
52 views

Is there a matrix with 0 "ultimate maximum"?

0 votes
2 answers
31 views

Where can it be differentiated and what's the derivative of $f(x)=\frac{1}{n!}$ when $x \in [2^{-n-1},2^{-n})$, and $f(x)=0$ otherwise?

0 votes
1 answer
86 views

What's the probability of him being in the last gym?