Question

Define two rational numbers $\alpha$ and $x$ such that $\sin( { \alpha }) =x$

score 673 · Answer 1 · 2026-04-04 15:12:18

673

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Define two rational numbers $\alpha$ and $x$ such that $\sin( { \alpha }) =x$

Published on 04 Apr 2026 - 15:12

score 163 · Answer 2 · 2026-04-04 15:10:45

163

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Can you produce a number like 1.01010101... by just addition and subtraction?

Published on 04 Apr 2026 - 15:10

score 2k · Answer 3 · 2013-05-10 13:36:17

2k

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Group $\mathbb Q^*$ as direct product/sum

Published on 10 May 2013 - 13:36

score 1.3k · Answer 4 · 2013-05-12 05:50:23

1.3k

Views

Can all possible angles on a rational triangle be represented as a rational multiplied by Pi?

Published on 12 May 2013 - 5:50

score 5.6k · Answer 5 · 2026-04-04 15:09:51

5.6k

Views

When is an Integer a Rational Number, and are All Ratios Rational, Even $\frac{\sqrt{7}}{2}$?

Published on 04 Apr 2026 - 15:09

score 3.9k · Answer 6 · 2013-05-17 05:54:33

3.9k

Views

System of linear equations having a real solution has also a rational solution.

Published on 17 May 2013 - 5:54

score 121 · Answer 7 · 2013-05-17 15:02:18

121

Views

Continuous variable defined over Rational numbers only?

Published on 17 May 2013 - 15:02

score 1.5k · Answer 8 · 2026-04-04 15:12:10

1.5k

Views

If $f(x)$ is equal to $x$ or $1-x$ when $x$ is rational/irrational, then $f$ is continuous only at $x=1/2$

Published on 04 Apr 2026 - 15:12

score 1.5k · Answer 9 · 2013-05-17 19:55:56

1.5k

Views

Can someone clarify Example I.I.2 from Hardy's Course of Pure Mathematics?

Published on 17 May 2013 - 19:55

score 9.8k · Answer 10 · 2013-05-18 15:05:06

9.8k

Views

Definition(s) of rational numbers

Published on 18 May 2013 - 15:05

score 36.9k · Answer 11 · 2013-05-19 07:06:03

36.9k

Views

Why is $\frac{987654321}{123456789} = 8.0000000729?!$

Published on 19 May 2013 - 7:06

score 6.8k · Answer 12 · 2013-05-19 14:33:54

6.8k

Views

real numbers a vector space over rational numbers?

Published on 19 May 2013 - 14:33

score 80 · Answer 13 · 2026-04-04 15:09:21

80

Views

What would be the value of $a$ and $b$ in following rational expression?

Published on 04 Apr 2026 - 15:09

score 725 · Answer 14 · 2026-04-04 15:02:55

725

Views

How do I evaluate the following expression?

Published on 04 Apr 2026 - 15:02

score 1k · Answer 15 · 2026-03-26 11:01:14

1k

Views

How many points can you find on $y=x^2$, for $x \geq 0$, such that each pair of points has rational distance?

Published on 26 Mar 2026 - 11:01

List Question

Define two rational numbers $\alpha$ and $x$ such that $\sin( { \alpha }) =x$

Can you produce a number like 1.01010101... by just addition and subtraction?

Group $\mathbb Q^*$ as direct product/sum

Can all possible angles on a rational triangle be represented as a rational multiplied by Pi?

When is an Integer a Rational Number, and are All Ratios Rational, Even $\frac{\sqrt{7}}{2}$?

System of linear equations having a real solution has also a rational solution.

Continuous variable defined over Rational numbers only?

If $f(x)$ is equal to $x$ or $1-x$ when $x$ is rational/irrational, then $f$ is continuous only at $x=1/2$

Can someone clarify Example I.I.2 from Hardy's Course of Pure Mathematics?

Definition(s) of rational numbers

Why is $\frac{987654321}{123456789} = 8.0000000729?!$

real numbers a vector space over rational numbers?

What would be the value of $a$ and $b$ in following rational expression?

How do I evaluate the following expression?

How many points can you find on $y=x^2$, for $x \geq 0$, such that each pair of points has rational distance?

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