User Maesumi

10 votes

What are some examples of a mathematical result being counterintuitive?

answered May 12, 2012 at 3:39

9 votes

Accepted

What is the product of this by telescopic method?

answered Aug 9, 2013 at 16:37

7 votes

Accepted

Are there Taylor series for functions of a matrix?

answered Mar 17, 2013 at 5:44

6 votes

Accepted

How to prove that $\frac{x}{a} + \frac{y}{b} = 1$ where $a$ is $x$-intercept and $b$ is $y$-intercept

answered Feb 13, 2013 at 0:18

5 votes

Accepted

Contraction Mapping question

answered May 3, 2012 at 21:47

5 votes

Accepted

How to solve the DE $y' = -y + ty^{1/2}$?

answered Feb 19, 2013 at 22:38

5 votes

Show that a matrix $A$ is singular if and only if $0$ is an eigenvalue.

answered Sep 24, 2013 at 14:22

4 votes

Accepted

Teaching the concept of a function.

answered Sep 12, 2013 at 2:12

4 votes

How to solve the following differential equation

answered Feb 21, 2013 at 21:20

4 votes

Difference between closure and the boundary

answered Mar 1, 2013 at 23:22

4 votes

A problem on matrices: Find the value of $k$

answered May 24, 2013 at 13:25

4 votes

Given the differential equation $(1+t^2)dy/dt+4ty=(1+t^2)^{-2}$

answered Jan 28, 2013 at 4:55

3 votes

Accepted

No. of ways of selecting more than 50% of the elements

answered Feb 2, 2013 at 15:18

3 votes

Inverse Laplace of $\dfrac{(s+1)e^{-\pi s}}{s^2 + s + 1}$

answered Jan 11, 2013 at 2:00

3 votes

Integral inequality, $f$ continuous, increasing function

answered May 30, 2013 at 14:49

3 votes

Accepted

Find the intersection (vector) of two 2D planes

answered Jun 10, 2013 at 3:21

3 votes

Accepted

Compound interest -like calculation, but with increasing rate

answered Aug 2, 2013 at 22:02

3 votes

Puzzles or short exercises illustrating mathematical problem solving to freshman students

answered Sep 22, 2013 at 15:44

2 votes

Accepted

$n$th derivative of $x^3(x-2x^{1/2})^2$

answered Sep 28, 2013 at 19:58

2 votes

Calculus books And some advice

answered Sep 30, 2013 at 10:44

2 votes

Accepted

Is there any function that never gives an answer other than 0/0 when applying L'Hôpital's rule?

answered Aug 5, 2013 at 4:36

2 votes

Accepted

Calculate points of Koch Curve

answered Sep 21, 2013 at 14:57

2 votes

If $x,y,z \in \mathbb{R^+}$ such that $x+y+z=3$. Prove the inequality $\sqrt x+\sqrt y+\sqrt z\ge xy+yz+zx$

answered Mar 17, 2014 at 19:07

2 votes

Determine the transient response

answered Apr 18, 2014 at 15:46

2 votes

How to think of $\vec{u}-\vec{v}$

answered Jun 13, 2013 at 3:37

2 votes

integrating by parts $ \int (x^2+2x)\cos(x)\,dx$

answered Jun 2, 2013 at 17:31

2 votes

How to check the line segment is normal to ellipse?

answered Jul 17, 2013 at 13:26

2 votes

functional equation (conti-function $f(x)$)

answered Jul 30, 2013 at 8:41

2 votes

Solving the next differential equation

answered May 26, 2013 at 18:11

2 votes

Differential equations question?

answered May 29, 2013 at 13:42

Stack Exchange Network

110 Answers

What are some examples of a mathematical result being counterintuitive?

What is the product of this by telescopic method?

Are there Taylor series for functions of a matrix?

How to prove that $\frac{x}{a} + \frac{y}{b} = 1$ where $a$ is $x$-intercept and $b$ is $y$-intercept

Contraction Mapping question

How to solve the DE $y' = -y + ty^{1/2}$?

Show that a matrix $A$ is singular if and only if $0$ is an eigenvalue.

Teaching the concept of a function.

How to solve the following differential equation

Difference between closure and the boundary

A problem on matrices: Find the value of $k$

Given the differential equation $(1+t^2)dy/dt+4ty=(1+t^2)^{-2}$

No. of ways of selecting more than 50% of the elements

Inverse Laplace of $\dfrac{(s+1)e^{-\pi s}}{s^2 + s + 1}$

Integral inequality, $f$ continuous, increasing function

Find the intersection (vector) of two 2D planes

Compound interest -like calculation, but with increasing rate

Puzzles or short exercises illustrating mathematical problem solving to freshman students

$n$th derivative of $x^3(x-2x^{1/2})^2$

Calculus books And some advice

Is there any function that never gives an answer other than 0/0 when applying L'Hôpital's rule?

Calculate points of Koch Curve

If $x,y,z \in \mathbb{R^+}$ such that $x+y+z=3$. Prove the inequality $\sqrt x+\sqrt y+\sqrt z\ge xy+yz+zx$

Determine the transient response

How to think of $\vec{u}-\vec{v}$

integrating by parts $ \int (x^2+2x)\cos(x)\,dx$

How to check the line segment is normal to ellipse?

functional equation (conti-function $f(x)$)

Solving the next differential equation

Differential equations question?