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NickD's user avatar
NickD's user avatar
NickD
  • Member for 5 years, 11 months
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11 votes
Accepted

How does summation index shifting work?

9 votes
Accepted

Does the unit of measure matter when you are solving for the diameter of a circumference?

8 votes

totient function series diverges?

6 votes

Is there a variant of the dot-product operation that returns $\frac{a_1}{b_1} + \frac{a_2}{b_2}$ from vectors $[a_1,a_2]$ and $[b_1, b_2]$?

5 votes
Accepted

Easiest way to solve this inequality? $m^2-mn+n^2+m-n>0$ for $m,n \in \mathit Z^+$

5 votes
Accepted

Is the zero vector not being a possible eigenvector just an arbitrary decision?

4 votes
Accepted

(Pre-Calculus) How would you graph $y = (x^2 − 1)(x − 2)^2$ by hand?

3 votes

What does $\sum\limits_{i\neq j}$ mean?

3 votes

Find The Probability of Quadratic having imaginary roots

3 votes

Hard integrals $\int_{0}^{\infty}\frac{1}{1+x^a} dx $ and $\int_{0}^{\infty} e^{-a x^2}\cos (bx) dx$

3 votes

Solve $\sum_{r=1}^n (2r-1)\cos(2r-1)\theta $

3 votes
Accepted

Can the input variable of any polynomial function be a non-polynomial function?

3 votes

$x^3+ax+b=0$ has only one solution

3 votes

Minimum possible value of change

3 votes
Accepted

Einstein Summation Notation and Kronecker Delta Problem

2 votes

Find the distance between Helsinki and Seattle

2 votes
Accepted

Looking for a continuously differentiable function that's bounded between 0 and 1, is 0 at 0, and approaches 1 as x approaches $\pm\infty$

2 votes

Corner Swappings on Rubiks Cube

2 votes
Accepted

Calculate bounding size to fit rectangle

2 votes
Accepted

How to express $\frac{\frac{1}{2}}{\sqrt[4]{\frac{3}4}-\sqrt[4]{\frac{1}{4}}}$ into $\frac{1}{2}\sqrt{5+3\sqrt{3}+2\sqrt{12+7\sqrt{3}}}$

2 votes
Accepted

Is negative quadratic function quasiconvex?

2 votes

Let M be the maximum number of unit disks (disks of radius 1) that can be placed inside a disk of radius 10

2 votes

Why is this equality true?

2 votes
Accepted

What am i getting wrong in applying stokes theorem?

2 votes
Accepted

Solving equations involving $x, \pi, \cos x$.

2 votes
Accepted

How does this entropy equation simplify?

2 votes

How do we factor out $x^2 - x -2$ in this expression?

2 votes
Accepted

Solving a summation using summation rules

2 votes

Why does ${-}14 \bmod 12 = 10$?

2 votes

How many four digit numbers are there with distinct digits?