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z100
  • Member for 6 years, 11 months
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5 votes

Rational numbers from irrational numbers

4 votes

Cover $\{1,2,...,100\}$ with minimum number of geometric progressions?

4 votes

You have to estimate $\binom{63}{19}$ in $2$ minutes to save your life.

4 votes
Accepted

How can I draw a 10 unit long line?

3 votes

Is $0! = 1$ because there is only one way to do nothing?

3 votes

if $x\mathcal R y$ defined by $|x|+|y| =|x+y|$. Is it an equivalence relation?

2 votes

Understanding the sieve of eratosthenes

2 votes

Complex equation $\left | z - 1 \right | = \left | z + 1 \right | + 3$

2 votes

The shortest distance from the parabola to the straight-line

1 vote

How do I factor this complex polynomial?

1 vote

Solving $\sin(x)=\cos(2x)$

1 vote

Write all sub matrices of $\begin{bmatrix} 1&2&3\\ 4&5&6\\ 7&8&9\\ \end{bmatrix}$

1 vote

Two Points with Infinite Distance

1 vote

Linear Algebra - Find the line that passes through a point and intersects two lines.

1 vote

Does this series of approximations of reciprocals of prime numbers diverge or converge?

1 vote

Pentagons cutting

1 vote

How to prove that $\sin \left(\frac 1 {x-1}\right)$ is discontinuous at $1$?

0 votes

Visualizing $180^\circ$ rotational symmetries of a tetrahedron

0 votes

Prove that $(-1)^n$ is bounded.

0 votes

determine if the given vectors span $\mathbb{R}^4$

0 votes

How do I find $m$ so that the given equation will have two different real solutions?

0 votes

three term asymptotic solution as $\epsilon \to 0$

0 votes

Union and intersection of sets with funcions

0 votes

relation between exponent values and solution

0 votes
Accepted

Tips on counting length of intervals

0 votes

How to determine if two vectors intersect in 3D space

0 votes

If you are given a graph of function h (x). How would you draw k (x)= 0.5 [ h (x+1) + h (x-1)]?

0 votes

$x^3 +y^2 +z =100z+10y+x$ What is the largest and smallest integer that satisfies this equation.

0 votes

Am I correct that the quadrilaterals in this textbook exercise aren't necessarily squares?

0 votes

How to convert 2D coordinates to 3D coordinates?