User foam78

7 votes

The form of $2 \times 2$ unitary matrices

answered Jan 14, 2022 at 4:05

2 votes

Algorithm to approximate decimal expansion for fraction

answered Apr 23, 2020 at 9:52

2 votes

Accepted

Find all the cluster points for the following

answered Apr 25, 2020 at 23:44

1 vote

Accepted

Finding the generator matrix $Q$ of a markov chain.

answered Apr 19, 2020 at 0:16

1 vote

Accepted

Non-differentiability of the Brownian motion

answered Apr 24, 2020 at 11:13

1 vote

Accepted

what is the negation of the statement

answered Apr 24, 2020 at 13:25

1 vote

Simple Matrix Subtraction Confusion

answered Apr 24, 2020 at 1:09

1 vote

Find Partial Sum Formula of a serie

answered Apr 24, 2020 at 1:57

1 vote

Accepted

What is the name of this determinant or matrix?

answered Apr 24, 2020 at 2:09

1 vote

How do you find the X and Y velocities required to draw a straight line from one point to another at a desired speed?

answered Apr 24, 2020 at 9:52

1 vote

if $\ Re(z)<0$ and $e^z=z+1$ the $z=?$

answered Apr 28, 2020 at 2:07

1 vote

Proving that there exists no subsequence of 3 numbers that is not monotonically increasing or decreasing in a sequence of 5 distinct numbers

answered Apr 28, 2020 at 19:50

1 vote

Accepted

$\text{SL}(2,\mathbb{R})$ is a double cover of $\text{SO}^+(2,1)$

answered Apr 28, 2020 at 20:06

1 vote

Accepted

Proof surrounding Markov Chains

answered Apr 29, 2020 at 16:02

1 vote

Accepted

How to solve a dual Lp graphically?

answered Apr 28, 2020 at 0:48

1 vote

Accepted

Proof that the order of a cyclic rotation of $p$ elements is always $1$ or $p$ for $p$ prime

answered May 10, 2020 at 3:01

0 votes

Given the binary operation $xy=x^2+4xy+y^2$ show that $a1 \in \mathbb{N}$ has infinitely many solutions, where $a$ is irrational.

answered Apr 30, 2020 at 10:40

0 votes

Prove that a compact set in the real numbers is a bounded set.

answered May 6, 2020 at 16:33

0 votes

Determine the unique vector x in the row space for A, for which Ax = b.

answered Apr 24, 2020 at 10:17

0 votes

Accepted

If 𝐴𝑥 = 𝑏 has exactly one solution then 𝐴𝑥 = 0 also has exactly one solution

answered Apr 23, 2020 at 9:59

0 votes

Inequality in Fourier analysis

answered Apr 24, 2020 at 0:30

0 votes

Why is $2^{n}-1=\sum\limits_{k=0}^{n-1}2^k$?

answered Apr 24, 2020 at 0:56

0 votes

Ways to choose $k$ items out $n$ without overlap in the chosen sets

answered Apr 19, 2020 at 0:37

0 votes

Sampling from a Bivariate Cauchy?

answered Apr 22, 2020 at 23:56

0 votes

Accepted

Using laplace transform to calculate $\int^{\infty}_0 \sin(t)\,dt$

answered Apr 25, 2020 at 23:48

0 votes

Accepted

reverse engineering conditional probability

answered Apr 26, 2020 at 0:18

0 votes

Accepted

Use induction to show that: $\frac{1}{2!} + \frac{2}{3!} + \frac{3}{4!} +\ldots + \frac{n}{(n+1)!} = 1-\frac{1}{(n+1)!}$

answered Apr 26, 2020 at 20:56

0 votes

Accepted

Using generating function to find total no. of ways to collect 15 dollars given the particular restrictions

answered Apr 27, 2020 at 18:13

0 votes

How to derive the formula for $\arctan(x) + \arctan(y)$ depending on $x,y$?

answered Apr 27, 2020 at 22:17

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29 Answers

The form of $2 \times 2$ unitary matrices

Algorithm to approximate decimal expansion for fraction

Find all the cluster points for the following

Finding the generator matrix $Q$ of a markov chain.

Non-differentiability of the Brownian motion

what is the negation of the statement

Simple Matrix Subtraction Confusion

Find Partial Sum Formula of a serie

What is the name of this determinant or matrix?

How do you find the X and Y velocities required to draw a straight line from one point to another at a desired speed?

if $\ Re(z)<0$ and $e^z=z+1$ the $z=?$

Proving that there exists no subsequence of 3 numbers that is not monotonically increasing or decreasing in a sequence of 5 distinct numbers

$\text{SL}(2,\mathbb{R})$ is a double cover of $\text{SO}^+(2,1)$

Proof surrounding Markov Chains

How to solve a dual Lp graphically?

Proof that the order of a cyclic rotation of $p$ elements is always $1$ or $p$ for $p$ prime

Given the binary operation $xy=x^2+4xy+y^2$ show that $a1 \in \mathbb{N}$ has infinitely many solutions, where $a$ is irrational.

Prove that a compact set in the real numbers is a bounded set.

Determine the unique vector x in the row space for A, for which Ax = b.

If 𝐴𝑥 = 𝑏 has exactly one solution then 𝐴𝑥 = 0 also has exactly one solution

Inequality in Fourier analysis

Why is $2^{n}-1=\sum\limits_{k=0}^{n-1}2^k$?

Ways to choose $k$ items out $n$ without overlap in the chosen sets

Sampling from a Bivariate Cauchy?

Using laplace transform to calculate $\int^{\infty}_0 \sin(t)\,dt$

reverse engineering conditional probability

Use induction to show that: $\frac{1}{2!} + \frac{2}{3!} + \frac{3}{4!} +\ldots + \frac{n}{(n+1)!} = 1-\frac{1}{(n+1)!}$

Using generating function to find total no. of ways to collect 15 dollars given the particular restrictions

How to derive the formula for $\arctan(x) + \arctan(y)$ depending on $x,y$?