Question

Calculating average without knowing number of elements

score 9.2k · Answer 1 · 2026-03-25 17:36:39

9.2k

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Calculating average without knowing number of elements

Published on 25 Mar 2026 - 17:36

score 62 · Answer 2 · 2026-03-25 14:46:58

62

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Where can I read the rules on the algabraic manipulation needed to finish this inductive proof that $133$ divides $11^{k+1}+12^{2k-1}$?

Published on 25 Mar 2026 - 14:46

score 75 · Answer 3 · 2026-03-25 07:43:48

75

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Which traits are lost in the limit, and which are retained?

Published on 25 Mar 2026 - 7:43

score 55 · Answer 4 · 2018-05-04 17:36:24

55

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Through induction show that $\sum_{k=0}^n (2k+1) = (n+1)^2, n\in \mathbb{N}$

Published on 04 May 2018 - 17:36

score 50 · Answer 5 · 2018-05-05 09:18:23

50

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Induction to prove that...

Published on 05 May 2018 - 9:18

score 406 · Answer 6 · 2018-05-05 10:13:05

406

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Invertible matrix and induction

Published on 05 May 2018 - 10:13

score 44 · Answer 7 · 2026-03-25 12:16:30

44

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How to prove Peano induction axiom for a candidate model

Published on 25 Mar 2026 - 12:16

score 76 · Answer 8 · 2026-03-25 16:02:08

76

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How do I recursively sum digits of a number until I'm left with only one digit using mathematical expression?

Published on 25 Mar 2026 - 16:02

score 111 · Answer 9 · 2018-05-07 00:08:42

111

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Prove $3^{2n+1} + 2^{n+2} = 7m$

Published on 07 May 2018 - 0:08

score 52 · Answer 10 · 2018-05-08 02:26:33

52

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Induction Step Subtleties

Published on 08 May 2018 - 2:26

score 108 · Answer 11 · 2026-03-25 19:11:59

108

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If AM-GM holds for any $2^n$ positive real numbers, show that AM-GM holds for any number of positive real numbers.

Published on 25 Mar 2026 - 19:11

score 68 · Answer 12 · 2026-03-26 17:32:13

68

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If $n \ge 1$, does it follow that $\left(\frac{3}{2}\right)^n > n$

Published on 26 Mar 2026 - 17:32

score 156 · Answer 13 · 2018-05-08 17:54:03

156

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N toys distribution among N children.

Published on 08 May 2018 - 17:54

score 83 · Answer 14 · 2026-03-25 12:27:10

83

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Check my understanding of proof that Partial order can be extended to total order

Published on 25 Mar 2026 - 12:27

score 1.5k · Answer 15 · 2018-05-08 19:33:45

1.5k

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The sum $1^2 + 2^2 + 3^2 + 4^2 + \dots + n^2 = \frac{n(n+1)(2n+1)}{6}$. What is the value of $21^2 + 22^2 + \dots + 40^2$?

Published on 08 May 2018 - 19:33

List Question

Calculating average without knowing number of elements

Where can I read the rules on the algabraic manipulation needed to finish this inductive proof that $133$ divides $11^{k+1}+12^{2k-1}$?

Which traits are lost in the limit, and which are retained?

Through induction show that $\sum_{k=0}^n (2k+1) = (n+1)^2, n\in \mathbb{N}$

Induction to prove that...

Invertible matrix and induction

How to prove Peano induction axiom for a candidate model

How do I recursively sum digits of a number until I'm left with only one digit using mathematical expression?

Prove $3^{2n+1} + 2^{n+2} = 7m$

Induction Step Subtleties

If AM-GM holds for any $2^n$ positive real numbers, show that AM-GM holds for any number of positive real numbers.

If $n \ge 1$, does it follow that $\left(\frac{3}{2}\right)^n > n$

N toys distribution among N children.

Check my understanding of proof that Partial order can be extended to total order

The sum $1^2 + 2^2 + 3^2 + 4^2 + \dots + n^2 = \frac{n(n+1)(2n+1)}{6}$. What is the value of $21^2 + 22^2 + \dots + 40^2$?

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