User Mark Fischler

41 votes

Accepted

Formula for the simple sequence 1, 2, 2, 3, 3, 4, 4, 5, 5, ...

answered Jan 31, 2016 at 1:22

33 votes

If a coin toss is observed to come up as heads many times, does that affect the probability of the next toss?

answered Jul 18, 2016 at 18:53

33 votes

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Find some digits of $17!$

answered Feb 28, 2019 at 19:09

30 votes

Why are irrational numbers such a big deal?

answered Jan 10, 2017 at 19:39

29 votes

Are there continuous functions for which the epsilon-delta property doesn't hold?

answered Nov 7, 2016 at 23:54

27 votes

Is there such a thing as a matrix of functions?

answered Jun 23, 2016 at 19:11

24 votes

% of % - Please Help Me Prove My Friend Wrong

answered Nov 26, 2014 at 18:53

20 votes

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Is it mathematically wrong to prove the Intermediate Value Theorem informally?

answered Aug 4, 2015 at 19:47

17 votes

$S=\sqrt{1}+\sqrt{2}+\sqrt{3}+\sqrt{4}+\dots+\sqrt{m}$ is almost an integer. Find $m$

answered Jul 9, 2019 at 20:38

16 votes

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Is there any continuous function that satisfies the following conditions?

answered Jan 17, 2017 at 23:31

14 votes

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Mean vs. Median: When to Use?

answered May 31, 2017 at 20:19

13 votes

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How can I rewrite recursive function as single formula?

answered Jun 24, 2016 at 22:12

13 votes

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If $f(z)=\cfrac{z+1}{z-1}$ , then find $f^{1991}(2+i)$

answered Dec 20, 2015 at 15:29

12 votes

Compute ${11 \choose 1} + {11 \choose 3} + ... + {11 \choose 11}$?

answered Jan 10, 2017 at 23:44

11 votes

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How to find a minimal polynomial

answered Oct 27, 2014 at 16:10

11 votes

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Are two random vectors independent, iff every pair of components from each vector are independent?

answered Nov 4, 2014 at 20:00

11 votes

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Need clarification on this l'Hopital's rule solution

answered Nov 10, 2014 at 16:02

11 votes

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Why are fundamental theorems called fundamental?

answered Feb 16, 2015 at 23:31

11 votes

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Easy Double Sums Question: $\sum_{m=1}^{\infty} \sum_{n=1}^{\infty} \frac{1}{(m+n)!}$

answered Mar 9, 2015 at 14:56

10 votes

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Doubt over the proof of Cayley- Hamilton heorem

answered Apr 28, 2017 at 23:29

9 votes

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Limit involving infinity

answered Oct 20, 2016 at 23:02

8 votes

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Compact notation for the product $k(k+1)(k+2)\cdots(k+n)$?

answered Sep 5, 2019 at 22:41

8 votes

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How to evaluate factorials greater than $69!$

answered Oct 23, 2014 at 23:00

7 votes

How to define $x^a$ for arbitrary real numbers $x$ and $a$

answered Feb 16, 2016 at 2:19

7 votes

How can you show by hand that $ e^{-1/e} < \ln(2) $?

answered Aug 29, 2019 at 20:14

7 votes

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$\sqrt{1 + \sqrt{1 + \sqrt{1 + ...}}} = \frac{1+\sqrt{5}}{2} = \phi$, is this a coincidence?

answered Oct 23, 2016 at 4:58

7 votes

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Exponential Function Problem

answered Sep 1, 2016 at 23:29

7 votes

showing the function |z| is analytic

answered Mar 2, 2015 at 17:57

7 votes

$p,q,r$ primes, $\sqrt{p}+\sqrt{q}+\sqrt{r}$ is irrational.

answered Aug 4, 2015 at 19:54

7 votes

Accepted

Prove that $T$ has an orbit of period 3

answered Apr 24, 2015 at 0:00

Stack Exchange Network

1,811 Answers

Formula for the simple sequence 1, 2, 2, 3, 3, 4, 4, 5, 5, ...

If a coin toss is observed to come up as heads many times, does that affect the probability of the next toss?

Find some digits of $17!$

Why are irrational numbers such a big deal?

Are there continuous functions for which the epsilon-delta property doesn't hold?

Is there such a thing as a matrix of functions?

% of % - Please Help Me Prove My Friend Wrong

Is it mathematically wrong to prove the Intermediate Value Theorem informally?

$S=\sqrt{1}+\sqrt{2}+\sqrt{3}+\sqrt{4}+\dots+\sqrt{m}$ is almost an integer. Find $m$

Is there any continuous function that satisfies the following conditions?

Mean vs. Median: When to Use?

How can I rewrite recursive function as single formula?

If $f(z)=\cfrac{z+1}{z-1}$ , then find $f^{1991}(2+i)$

Compute ${11 \choose 1} + {11 \choose 3} + ... + {11 \choose 11}$?

How to find a minimal polynomial

Are two random vectors independent, iff every pair of components from each vector are independent?

Need clarification on this l'Hopital's rule solution

Why are fundamental theorems called fundamental?

Easy Double Sums Question: $\sum_{m=1}^{\infty} \sum_{n=1}^{\infty} \frac{1}{(m+n)!}$

Doubt over the proof of Cayley- Hamilton heorem

Limit involving infinity

Compact notation for the product $k(k+1)(k+2)\cdots(k+n)$?

How to evaluate factorials greater than $69!$

How to define $x^a$ for arbitrary real numbers $x$ and $a$

How can you show by hand that $ e^{-1/e} < \ln(2) $?

$\sqrt{1 + \sqrt{1 + \sqrt{1 + ...}}} = \frac{1+\sqrt{5}}{2} = \phi$, is this a coincidence?

Exponential Function Problem

showing the function |z| is analytic

$p,q,r$ primes, $\sqrt{p}+\sqrt{q}+\sqrt{r}$ is irrational.

Prove that $T$ has an orbit of period 3