Question

How do you prove that a symmetric matrix is always diagonalizable even though there are eigenvalues whose multiplicity $k\ge2$?

score 3.4k · Answer 1 · 2026-05-10 14:55:48

3.4k

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How do you prove that a symmetric matrix is always diagonalizable even though there are eigenvalues whose multiplicity $k\ge2$?

Published on 10 May 2026 - 14:55

score 1.9k · Answer 2 · 2026-04-10 16:34:01

1.9k

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Linear Algebra - If A is invertible then A+I is invertible

Published on 10 Apr 2026 - 16:34

score 98 · Answer 3 · 2026-05-10 15:28:32

98

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Proof of injectivity,

Published on 10 May 2026 - 15:28

score 255 · Answer 4 · 2026-05-10 14:04:49

255

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What do "mod $2x$" and "mod $x$" mean when used with angles?

Published on 10 May 2026 - 14:04

score 973 · Answer 5 · 2026-05-10 16:53:08

973

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Why does SOH CAH TOA hold?

Published on 10 May 2026 - 16:53

score 110 · Answer 6 · 2026-05-10 15:50:46

110

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Is this the right way to prove basic limit identities?

Published on 10 May 2026 - 15:50

score 6.5k · Answer 7 · 2026-05-10 15:02:13

6.5k

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Questions on how to prove that a set of connectives is NOT functionally complete

Published on 10 May 2026 - 15:02

score 625 · Answer 8 · 2026-04-29 12:41:14

625

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Use combinatorial arguments to prove the following binomial identities

Published on 29 Apr 2026 - 12:41

score 2.9k · Answer 9 · 2026-04-14 05:28:28

2.9k

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Using sequences to prove a limit doesn't exist?

Published on 14 Apr 2026 - 5:28

score 426 · Answer 10 · 2026-05-04 03:55:21

426

Views

How to interpret this visual proof for Archimedes' derivation of Sum of Squares?

Published on 04 May 2026 - 3:55

score 96 · Answer 11 · 2026-05-06 11:06:23

96

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Infinitesimal Values

Published on 06 May 2026 - 11:06

score 206 · Answer 12 · 2026-04-17 04:36:18

206

Views

quadratic eq proof ;a,b,c odd, roots can't be rational no.

Published on 17 Apr 2026 - 4:36

score 3.9k · Answer 13 · 2026-05-10 16:12:49

3.9k

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Proof that there is no rational solutions to the equation $x^3+2x-1=0$

Published on 10 May 2026 - 16:12

score 206 · Answer 14 · 2026-04-12 10:23:14

206

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Understanding the proof of every convergent sequence of real numbers is bounded.

Published on 12 Apr 2026 - 10:23

score 110 · Answer 15 · 2026-04-29 12:51:26

110

Views

What is the contradiction of the statement $\forall r\in\mathbb{R}\ (\mathit{irrational}(r^3)\Rightarrow \mathit{irrational}(r))$?

Published on 29 Apr 2026 - 12:51

List Question

How do you prove that a symmetric matrix is always diagonalizable even though there are eigenvalues whose multiplicity $k\ge2$?

Linear Algebra - If A is invertible then A+I is invertible

Proof of injectivity,

What do "mod $2x$" and "mod $x$" mean when used with angles?

Why does SOH CAH TOA hold?

Is this the right way to prove basic limit identities?

Questions on how to prove that a set of connectives is NOT functionally complete

Use combinatorial arguments to prove the following binomial identities

Using sequences to prove a limit doesn't exist?

How to interpret this visual proof for Archimedes' derivation of Sum of Squares?

Infinitesimal Values

quadratic eq proof ;a,b,c odd, roots can't be rational no.

Proof that there is no rational solutions to the equation $x^3+2x-1=0$

Understanding the proof of every convergent sequence of real numbers is bounded.

What is the contradiction of the statement $\forall r\in\mathbb{R}\ (\mathit{irrational}(r^3)\Rightarrow \mathit{irrational}(r))$?

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