User user5402

15 votes

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How to calculate $\cos(6^\circ)$?

answered Jul 7, 2013 at 21:33

12 votes

Upper Bound of Logarithm

answered Jul 1, 2013 at 8:45

8 votes

Finding all possible proofs

answered Dec 2, 2018 at 18:06

7 votes

How do we take second order of total differential?

answered Jun 30, 2013 at 14:15

7 votes

Infimum and supremum of the empty set

answered Jun 29, 2013 at 18:25

6 votes

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Evaluating $\int \sqrt{1 + t^2} dt$?

answered Jun 27, 2013 at 21:05

5 votes

Exercise books in analysis

answered Sep 28, 2014 at 9:42

4 votes

How to visualize a convex set is connected but not vice-versa.

answered Oct 11, 2014 at 16:48

4 votes

Prove that $(1-x_{1})\cdots(1-x_{k}) \leq (1-\frac{1}{k})^{k}$

answered Dec 30, 2014 at 18:36

4 votes

Are there any other methods to apply to solving simultaneous equations?

answered Apr 10, 2019 at 20:43

4 votes

Intuitively, what exactly does the ellipse equation mean?

answered Jun 23, 2018 at 15:46

4 votes

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Centre of mass moves with constant velocity

answered Jul 23, 2013 at 20:27

4 votes

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Is an algebraic formula to test real numbers equality?

answered Aug 15, 2013 at 16:13

3 votes

Is it possible to have multiple decimal points in a number?

answered Jul 8, 2013 at 18:29

3 votes

Why I cannot solve this limit problem this way?

answered Jul 4, 2013 at 16:02

3 votes

Question of trigonometry

answered Sep 18, 2014 at 13:32

3 votes

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What is this inequality stating?

answered Sep 18, 2015 at 22:47

3 votes

What's the name of the property that $a \cdot (b / c) = (a \cdot b) / c?$

answered Apr 4, 2015 at 10:24

2 votes

Time period of ODE

answered Aug 28, 2014 at 14:02

2 votes

Compare the sum of the squares of the median of a triangle to the sum of the squares of sides

answered Aug 5, 2013 at 20:35

2 votes

Why is $\tan 54^\circ\approx \frac{\sin24^\circ}{1-\sqrt{3}\sin24^\circ}$

answered Aug 7, 2014 at 15:45

2 votes

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The motion of the particle satisfies $\textbf{v} = \textbf{c}\times \textbf{r}$

answered Aug 11, 2014 at 12:57

2 votes

A stimulating book about algebra

answered Sep 21, 2014 at 12:46

2 votes

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Where have I gone wrong? (Series evalution)

answered Jul 10, 2015 at 17:09

2 votes

Solving $\lim_{x\to+\infty}{x^2(\cos(\frac{\pi}{x+2})-1)}$

answered Dec 10, 2018 at 16:54

2 votes

Is this true? $f(g(x))=g(f(x))\iff f^{-1}(g^{-1}(x))=g^{-1}(f^{-1}(x))$.

answered Jul 3, 2013 at 7:43

2 votes

Hyperplane - explanation of theorem needed

answered Jun 29, 2013 at 16:38

2 votes

Accepted

Finding vowels occupy places in word?

answered Jun 29, 2013 at 16:47

2 votes

Accepted

Right -angled triangle perimeter question

answered Mar 30, 2014 at 14:27

2 votes

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Is my solution correct? (trigonometry)

answered May 5, 2019 at 20:58

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74 Answers

How to calculate $\cos(6^\circ)$?

Upper Bound of Logarithm

Finding all possible proofs

How do we take second order of total differential?

Infimum and supremum of the empty set

Evaluating $\int \sqrt{1 + t^2} dt$?

Exercise books in analysis

How to visualize a convex set is connected but not vice-versa.

Prove that $(1-x_{1})\cdots(1-x_{k}) \leq (1-\frac{1}{k})^{k}$

Are there any other methods to apply to solving simultaneous equations?

Intuitively, what exactly does the ellipse equation mean?

Centre of mass moves with constant velocity

Is an algebraic formula to test real numbers equality?

Is it possible to have multiple decimal points in a number?

Why I cannot solve this limit problem this way?

Question of trigonometry

What is this inequality stating?

What's the name of the property that $a \cdot (b / c) = (a \cdot b) / c?$

Time period of ODE

Compare the sum of the squares of the median of a triangle to the sum of the squares of sides

Why is $\tan 54^\circ\approx \frac{\sin24^\circ}{1-\sqrt{3}\sin24^\circ}$

The motion of the particle satisfies $\textbf{v} = \textbf{c}\times \textbf{r}$

A stimulating book about algebra

Where have I gone wrong? (Series evalution)

Solving $\lim_{x\to+\infty}{x^2(\cos(\frac{\pi}{x+2})-1)}$

Is this true? $f(g(x))=g(f(x))\iff f^{-1}(g^{-1}(x))=g^{-1}(f^{-1}(x))$.

Hyperplane - explanation of theorem needed

Finding vowels occupy places in word?

Right -angled triangle perimeter question

Is my solution correct? (trigonometry)