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Eivind
  • Member for 11 years, 6 months
  • Last seen more than 3 years ago
  • Tromsø, Norway
21 votes
Accepted

How to prove existence of solutions without constructing one?

11 votes
Accepted

Calculating prime numbers

8 votes

Why do we take a derivative?

7 votes

Draw customized (calculus) graphs like these?

6 votes

What are the postulates that can be used to derive geometry?

6 votes

Why do mathematicians use single-letter variables?

6 votes

Is there an elementary proof for Fermat's last theorem?

6 votes
Accepted

Dot product of two vectors

4 votes
Accepted

About the factors of the product of prime numbers

4 votes
Accepted

Compute unknown limit from known integral in Mathematica?

3 votes

Squaring across an inequality with an unknown number

3 votes

What are the postulates that can be used to derive geometry?

3 votes
Accepted

Expected Value of Binomial Probability Distribution - Issue with Notation

3 votes

What does a hat or star means in math?

2 votes
Accepted

Multiplication and Division

2 votes
Accepted

Finding points on two linear lines which are a particular distance apart

2 votes

Do these three lines intersect the same point, and if so, where?

2 votes
Accepted

Are these fractions all equal?

1 vote

$u$-substitution into integral

1 vote
Accepted

Relative invariant w.r.t. $Xf$

1 vote

Differential Invariants

1 vote

Irreducible components and connected components of an algebraic group

1 vote
Accepted

Volume of a rotated region?

1 vote

Regarding a proof involving geometric series

1 vote

How to find the distance between a point and line joining two points on a sphere?

0 votes
Accepted

If $f(1) = 2$ and $f(n) = n \cdot f(n-1)$ then $f(n) \gt 2^n$ for all $n \gt 2$

0 votes

Can't determine whether problem involves the binomial distribution or not

0 votes
Accepted

probability that he will be selected in one of the firms

0 votes
Accepted

Enter "Int" on Casio graphical calculator

0 votes
Accepted

Work out the percentage of a single unit in a scale