Jan Eerland's user avatar
Jan Eerland's user avatar
Jan Eerland's user avatar
Jan Eerland
  • Member for 8 years, 7 months
  • Last seen more than a week ago
  • The Netherlands
9 votes
3 answers
535 views

Calculating the integral points of an elliptic curve

7 votes
5 answers
351 views

Checking if a number is right sorted

6 votes
1 answer
6k views

Plot only those regions where a function's value is positive

6 votes
2 answers
1k views

Calculate the Bromwich Integral (Inverse Laplace Transform)

5 votes
4 answers
413 views

Programming a recursive formula into Mathematica and find the nth position in the sequence

5 votes
3 answers
763 views

Writing a program that divide numbers until I hit a one digit number

5 votes
8 answers
1k views

Making the number 12345...n

5 votes
4 answers
833 views

Removing certain numbers from a list

5 votes
2 answers
375 views

Coding a triangle of balls

5 votes
1 answer
415 views

Sum a number's digits until only one digit remain

4 votes
2 answers
97 views

Test if the decimal digits of $n$ appear $n$ times in the decimal representation of $n!$

4 votes
3 answers
265 views

Finding a subset in the set of the digits of Pi

4 votes
2 answers
194 views

Finding the number of even numbers in Pascal's triangle (code gives memory error)

4 votes
1 answer
142 views

Finding the number of appearances that a number turns up in a certain list of numbers

4 votes
3 answers
298 views

Constant curvature surfaces. Revolution of the graphs of solutions to a nonlinear differential equation

4 votes
2 answers
178 views

4X4 matrix of distinct cubed integers with identical row and column sums

4 votes
2 answers
299 views

Making a 3D-solid from RevolutionAxis

4 votes
3 answers
267 views

Writing a program that will filter the integer solutions

3 votes
2 answers
230 views

Using the solve function for big numbers, getting a failure now

3 votes
2 answers
192 views

Finding 36 integer solutions to a set of 14 equations using various boundary conditions

3 votes
3 answers
192 views

Is there a way to speed up the following calculation Table[If[TrueQ[],k,Nothing],{k,10^5,10^7}]

3 votes
1 answer
379 views

Using DSolve to solve an integral equation

3 votes
3 answers
279 views

Solving for a unique set of solutions

3 votes
1 answer
93 views

Removing a element from list when obeying a certain condition

3 votes
4 answers
405 views

Plotting a hard integral describing voltage in an electric circuit

3 votes
4 answers
632 views

Solving an equation in natural numbers

3 votes
3 answers
255 views

Plotting datapoints found in data given in a .txt file

3 votes
2 answers
105 views

Check certain expression using a while loop to run through all posibilities in a range

2 votes
1 answer
70 views

Extracting coefficients from equation [closed]

2 votes
2 answers
135 views

Returning a custom value rather than {} when Solve finds no solutions [closed]