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Michael Hartley

Member for 9 years, 8 months
Last seen more than a week ago

Summary

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algebra-precalculus

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Answers

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8

If $a$ is a root of $x^2+ x + 1$, simplify $1 + a + a^2 +\dots+ a^{2017}.$

Aug 28, 2017

6

Fibonacci 19^n is multiple of 19 a mathematical property or a unique event?

Nov 24, 2022

4

The sequence $(x_n)$ : $x_{n+2}=\frac{x_{n+1}\sqrt{x_n^2+1}+x_{n}\sqrt{x_{n+1}^2+1}-x_n-x_{n+1}}{x_{n+1}x_n-(\sqrt{x_{n+1}^2+1}-1)(\sqrt{x_n^2+1}-1)}$

Aug 30, 2021

4

Write all permutations in the cyclic group $C_{12}$ of order 12 in cycle notation.

Nov 16, 2021

4

Let $V$ be the space spanned by $v_1=\cos^2x$, $v_2=\sin^2x$ and $v_3=\cos2x$.

Aug 28, 2017

Questions

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2

Is there a pair of tuples N, M of prime numbers which (a) have the same product, and (b) whose partial products have the same sum?

Jan 6, 2021

1

Determining a PDF from its moments

Sep 19, 2017

1

How to triangulate a sphere, with bounded edge lengths?

Feb 19, 2020

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algebra-precalculus

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7

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polynomials

15

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4

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roots

15

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4

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linear-algebra

14

Score

10

posts

probability

13

Score

8

posts

Reputation

+10

$a$ algebraic number, $\exists$ integer $n>0$ such that $na$ algebraic integer

+15

Largest prime factors of two consecutive natural numbers

+15

What is the singular value of such a simple permutation matrix?

+10

Are most uncorrelated variables dependent?

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