Question

How to calculate the number of ways to climb a building if only $1$ or $2$ floors can be climbed each time with elevator possibility at some floor?

score 53 · Answer 1 · 2026-03-25 09:29:53

53

Views

How to calculate the number of ways to climb a building if only $1$ or $2$ floors can be climbed each time with elevator possibility at some floor?

Published on 25 Mar 2026 - 9:29

score 53 · Answer 2 · 2018-05-28 15:28:44

53

Views

Construction of i.i.d. sample

Published on 28 May 2018 - 15:28

score 118 · Answer 3 · 2026-03-25 12:51:03

118

Views

Find the value of $f(2009)$ if $f(x-y)=\sqrt{f(xy)+1}$

Published on 25 Mar 2026 - 12:51

score 248 · Answer 4 · 2018-05-28 17:25:43

248

Views

Euler's Theorem proof

Published on 28 May 2018 - 17:25

score 329 · Answer 5 · 2026-03-31 17:49:26

329

Views

Solution to $A \vec{x} = \vec{b}$ is unique if and only if the equation $A \vec{x} = \vec{0}$ has the trivial solution $\vec{x} = \vec{0}$

Published on 31 Mar 2026 - 17:49

score 250 · Answer 6 · 2026-03-28 03:02:38

250

Views

Evaluate $\lim\limits \frac{x-\sin\sin\cdots\sin x}{x^3}.$

Published on 28 Mar 2026 - 3:02

score 39 · Answer 7 · 2026-03-29 10:15:19

39

Views

Proof Verification: Using axiom of choice correctly.

Published on 29 Mar 2026 - 10:15

score 46 · Answer 8 · 2026-03-30 06:09:21

46

Views

Showing map is linear and finding matrix that describes the map

Published on 30 Mar 2026 - 6:09

score 72 · Answer 9 · 2026-03-30 15:30:00

72

Views

Solutions of $x^4+2tx^2+1=0$

Published on 30 Mar 2026 - 15:30

score 52 · Answer 10 · 2026-03-28 11:42:52

52

Views

Prove that the given set is closed.

Published on 28 Mar 2026 - 11:42

score 130 · Answer 11 · 2026-03-28 03:34:48

130

Views

Limit of Integral with Uniformly Convergent Integrand

Published on 28 Mar 2026 - 3:34

score 26 · Answer 12 · 2018-05-29 20:55:02

26

Views

$x_i > \frac{\sum_{j=1}^{n} x_j}{n} \leftrightarrow x_i > \frac{\sum_{j\not = i} x_j}{n-1}$

Published on 29 May 2018 - 20:55

score 507 · Answer 13 · 2018-05-30 02:03:11

507

Views

Show that $f$ is a constant function.

Published on 30 May 2018 - 2:03

score 88 · Answer 14 · 2018-05-30 02:30:48

88

Views

Let $a_{n+1} = a_n + \frac{1}{{a_n}^{2005}}$ and $a_1=1$. Show that $\sum^{\infty}_{n=1}{\frac{1}{n a_n}}$ converge.

Published on 30 May 2018 - 2:30

score 76 · Answer 15 · 2018-05-30 03:49:05

76

Views

If we know that two acute angles have the same value for some trigonometric function, then we know the angles are equal .

Published on 30 May 2018 - 3:49

List Question

How to calculate the number of ways to climb a building if only $1$ or $2$ floors can be climbed each time with elevator possibility at some floor?

Construction of i.i.d. sample

Find the value of $f(2009)$ if $f(x-y)=\sqrt{f(xy)+1}$

Euler's Theorem proof

Solution to $A \vec{x} = \vec{b}$ is unique if and only if the equation $A \vec{x} = \vec{0}$ has the trivial solution $\vec{x} = \vec{0}$

Evaluate $\lim\limits \frac{x-\sin\sin\cdots\sin x}{x^3}.$

Proof Verification: Using axiom of choice correctly.

Showing map is linear and finding matrix that describes the map

Solutions of $x^4+2tx^2+1=0$

Prove that the given set is closed.

Limit of Integral with Uniformly Convergent Integrand

$x_i > \frac{\sum_{j=1}^{n} x_j}{n} \leftrightarrow x_i > \frac{\sum_{j\not = i} x_j}{n-1}$

Show that $f$ is a constant function.

Let $a_{n+1} = a_n + \frac{1}{{a_n}^{2005}}$ and $a_1=1$. Show that $\sum^{\infty}_{n=1}{\frac{1}{n a_n}}$ converge.

If we know that two acute angles have the same value for some trigonometric function, then we know the angles are equal .

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