User minthao_2011

53 votes

4 answers

22k views

How do I work with Root objects?

asked Oct 28, 2012 at 0:01

35 votes

8 answers

2k views

How do I get my equation to have the form $(x-a)^2 + (y-b)^2 + (z-c)^2-d = 0$?

asked Feb 23, 2013 at 15:46

18 votes

4 answers

797 views

How do I introduce a new variable in a trigonometric equation?

asked Sep 27, 2012 at 16:09

16 votes

5 answers

4k views

How to get exact roots of this polynomial?

asked Jan 4, 2013 at 16:13

14 votes

2 answers

1k views

How do I solve this equation?

asked Dec 24, 2012 at 2:39

13 votes

4 answers

1k views

How can I find all values of $m$ such that my cubic equation has three different positive solutions?

asked Jul 18, 2013 at 13:27

12 votes

2 answers

573 views

Is there a triangle like this?

asked Sep 14, 2013 at 15:12

11 votes

5 answers

739 views

How to choose three points on the circle so that the triangle is not a right triangle?

asked Jun 23, 2013 at 14:05

11 votes

2 answers

2k views

How to solve a system of equations of the Vietnamese Mathematical Olympiad?

asked Jan 11, 2013 at 16:02

10 votes

3 answers

5k views

Finding the number of solutions to a diophantine equation

asked Sep 13, 2012 at 8:22

9 votes

1 answer

284 views

$1 - \sqrt{5}$ $\in$ $\mathbf{R}$?

asked Jul 23, 2013 at 10:15

8 votes

1 answer

3k views

How to substitute the following conditions into an expression?

asked Feb 11, 2014 at 15:17

8 votes

3 answers

3k views

How can I solve the equation with integers as a solution?

asked Sep 9, 2012 at 13:41

8 votes

4 answers

3k views

How to prove an expression by method of mathematical induction?

asked Oct 19, 2012 at 15:00

7 votes

4 answers

1k views

How to transform the result of this integral into powers of $\sin\,x$?

asked Oct 17, 2012 at 15:31

7 votes

3 answers

375 views

How to calculate this sum?

asked Dec 20, 2012 at 15:21

7 votes

3 answers

14k views

How to solve this system of equations?

asked Mar 16, 2013 at 15:51

6 votes

1 answer

2k views

How to solve this equation with integers as a solution?

asked Apr 21, 2013 at 16:03

6 votes

2 answers

5k views

How to determine the remaining sides given the three angles and one side of a triangle?

asked Nov 10, 2012 at 2:43

6 votes

2 answers

3k views

Union and Intersection of intervals

asked Oct 1, 2012 at 0:59

6 votes

2 answers

1k views

How to receive the result of the integral $ \int\frac{1}{x}dx$ is $\ln|x|$?

asked Oct 19, 2012 at 8:00

6 votes

1 answer

1k views

Reduce an equation by putting a new variable

asked Sep 22, 2012 at 2:13

6 votes

3 answers

2k views

Find all the integer numbers $a$, $b$, $c$, $d$, $e$, $f$, $k$ to this equation have three integer different solutions?

asked May 17, 2013 at 6:19

6 votes

3 answers

613 views

How to get the correct answer when solve this equation?

asked May 29, 2013 at 3:33

6 votes

2 answers

2k views

How can I get the exact real solution of this equation?

asked Jun 23, 2014 at 4:19

5 votes

2 answers

555 views

How can I get all solutions of a system of equations with Reduce?

asked Jan 24, 2015 at 4:29

5 votes

2 answers

281 views

Reduce with Integer domain, but receive a rational solution

asked Jan 7, 2014 at 8:43

5 votes

1 answer

4k views

Equation of the plane passing through the three points [duplicate]

asked Sep 11, 2012 at 6:27

5 votes

4 answers

6k views

How to solve this logarithmic equation?

asked Oct 21, 2012 at 15:22

5 votes

2 answers

380 views

How to solve this combination equation?

asked Dec 9, 2012 at 9:05

Stack Exchange Network

65 Questions

How do I work with Root objects?

How do I get my equation to have the form $(x-a)^2 + (y-b)^2 + (z-c)^2-d = 0$?

How do I introduce a new variable in a trigonometric equation?

How to get exact roots of this polynomial?

How do I solve this equation?

How can I find all values of $m$ such that my cubic equation has three different positive solutions?

Is there a triangle like this?

How to choose three points on the circle so that the triangle is not a right triangle?

How to solve a system of equations of the Vietnamese Mathematical Olympiad?

Finding the number of solutions to a diophantine equation

$1 - \sqrt{5}$ $\in$ $\mathbf{R}$?

How to substitute the following conditions into an expression?

How can I solve the equation with integers as a solution?

How to prove an expression by method of mathematical induction?

How to transform the result of this integral into powers of $\sin\,x$?

How to calculate this sum?

How to solve this system of equations?

How to solve this equation with integers as a solution?

How to determine the remaining sides given the three angles and one side of a triangle?

Union and Intersection of intervals

How to receive the result of the integral $ \int\frac{1}{x}dx$ is $\ln|x|$?

Reduce an equation by putting a new variable

Find all the integer numbers $a$, $b$, $c$, $d$, $e$, $f$, $k$ to this equation have three integer different solutions?

How to get the correct answer when solve this equation?

How can I get the exact real solution of this equation?

How can I get all solutions of a system of equations with Reduce?

Reduce with Integer domain, but receive a rational solution

Equation of the plane passing through the three points [duplicate]

How to solve this logarithmic equation?

How to solve this combination equation?