Hottest Questions This Month

13

votes

4

answers

2k

views

Why does `FindFit` fail so badly in this simple case?

fitting

modified Sep 25 at 14:32 JimB 21.6k

13

votes

6

answers

617

views

Replace zeros in a list with last nonzero value

list-manipulation pattern-matching

modified Sep 27 at 8:49 kglr 222k

11

votes

7

answers

450

views

How can I add just the second elements in lists of pairs?

list-manipulation

modified Oct 10 at 4:58 m_goldberg 92.1k

20

votes

1

answer

2k

views

Is there any algorithm that runs faster in Mathematica than in C or FORTRAN?

performance-tuning function-construction

modified 5 hours ago Mefitico 149

20

votes

4

answers

1k

views

Does Mathematica 11 work with MacOS Catalina 10.15

mac-os-x version-11

modified Oct 13 at 0:25 xiaohuamao 1,362

8

votes

3

answers

857

views

Modify real part and leaves imaginary part unchanged

complex

answered Oct 2 at 18:26 Michael Seifert 7,339

6

votes

4

answers

638

views

MaxDetect speed

list-manipulation performance-tuning image-processing mathematical-optimization

modified Sep 24 at 10:58 Henrik Schumacher 69.5k

5

votes

7

answers

1k

views

Make a list of Fibonacci numbers less than 1000, whose index is in the form 3m+1. Verify that all these numbers are odd

list-manipulation

answered 2 days ago yarchik 5,848

6

votes

6

answers

546

views

How do I count the number of elements in a list which are between two determined values?

list-manipulation performance-tuning

modified Oct 9 at 20:08 kglr 222k

7

votes

4

answers

672

views

Mapping string into integers

list-manipulation map

modified Oct 8 at 18:33 kglr 222k

8

votes

3

answers

567

views

What's the most efficient way to draw this region?

regions filling drawing scidraw

modified Oct 4 at 22:10 David G. Stork 26.4k

5

votes

4

answers

819

views

Flatten an array

list-manipulation

modified Oct 14 at 18:37 kglr 222k

4

votes

4

answers

998

views

I wanna get a result of i/j . Like 1/3, 1/5, 1/7, 3/5, 3, 5/3… Something like that. But none of my code works [on hold]

list-manipulation

modified Oct 14 at 9:32 kglr 222k

3

votes

5

answers

342

views

Repeat elements in list, but the number of times each element is repeated is provided by a separate list

list-manipulation

modified Sep 21 at 5:19 J. M. will be back soon♦ 101k

10

votes

2

answers

480

views

Using Terminal` (ASCII plots) in Wolfram 12

plotting packages kernel compatibility raspberry-pi

modified Oct 6 at 5:32 xzczd 29.8k

8

votes

2

answers

340

views

How to explain the strange behaviour about Function Nothing [duplicate]

list-manipulation

modified Sep 27 at 13:59 Alexey Popkov 40.8k

5

votes

5

answers

364

views

A replacement for NextPermutation in Combinatorica

list-manipulation discrete

answered Oct 7 at 14:20 Chip Hurst 25.7k

6

votes

2

answers

210

views

Generating set partition diagrams

visualization combinatorics

modified Oct 2 at 21:12 kglr 222k

4

votes

2

answers

380

views

Drawing a sequence of circles

graphics number-theory

modified Oct 10 at 11:13 kglr 222k

2

votes

3

answers

303

views

Solve command does not solve this equation!

calculus-and-analysis

answered Oct 13 at 11:27 C. E. 56.1k

4

votes

3

answers

263

views

Using the Disk graphics primitive

regions geometry

modified Sep 19 at 18:15 kglr 222k

7

votes

4

answers

204

views

Generate an array with custom index

array map

answered Oct 12 at 17:01 Lukas Lang 11.2k

6

votes

3

answers

191

views

Include boundary conditions in wave equation solver

differential-equations equation-solving

modified Sep 24 at 0:32 Nasser 63.2k

4

votes

3

answers

402

views

Slow computation of recursive sequences

recursion difference-equations sequence markov-chains

answered Oct 8 at 22:25 Bob Hanlon 67.3k

7

votes

1

answer

311

views

Finding a parametric curve fitting a two-dimensional dataset

fitting parametric-functions

modified Oct 14 at 16:10 Alexey Popkov 40.8k

5

votes

3

answers

215

views

Number of list elements less than a given integer

list-manipulation performance-tuning function-construction

modified Sep 23 at 1:35 kglr 222k

4

votes

5

answers

302

views

Applying rules on rules

calculus-and-analysis replacement

modified Oct 3 at 20:18 mikado 8,062

5

votes

3

answers

233

views

Defining a big matrix for iterative algorithm

equation-solving matrix

modified Oct 14 at 9:28 kglr 222k

11

votes

2

answers

180

views

The use of SlotSequence in If[#1 > #2, ##] &

functions pure-function sequence

modified Oct 12 at 18:13 halirutan♦ 98.7k

6

votes

2

answers

282

views

Is there a simple way to apply a function to the RHS of a substitution?

rule

answered Oct 1 at 1:04 kglr 222k

3

votes

4

answers

197

views

How to select pairs in a list of pairs where the second pair element is within a specified range? [on hold]

list-manipulation filtering

modified yesterday kglr 222k

5

votes

3

answers

130

views

Creating specific options in `Manipulate[]`

manipulate

modified Sep 24 at 15:52 Lukas Lang 11.2k

4

votes

3

answers

212

views

Writing a program that will filter the integer solutions

equation-solving programming code-request system code

answered Sep 25 at 3:27 MelaGo 3,506

4

votes

4

answers

95

views

How to transform an UpperDiagonalMatrix into a symmetric matrix in Mathematica 5.2?

list-manipulation matrix map

modified Oct 12 at 15:02 kglr 222k

7

votes

3

answers

239

views

How can I check if a function can be written as $a * \sin (b * x + c) + d$?

pattern-matching algebraic-manipulation argument-patterns

modified Oct 13 at 14:08 Michael E2 160k

9

votes

2

answers

167

views

The FEMDampingElements operator failed

finite-element-method

modified Oct 11 at 17:43 Alex Trounev 12.5k

11

votes

1

answer

252

views

How to work with ElasticSearch in Mathematica?

web-access webservices

modified Oct 1 at 18:42 Alexey Golyshev 6,129

9

votes

2

answers

196

views

Solving “Lyapunov-like” equation AX+X'B=C

matrix linear-algebra

modified Oct 1 at 8:45 Eddy Xiao 499

4

votes

2

answers

300

views

Siginificant speed difference of Integrate between 9.0 and 12.0

calculus-and-analysis performance-tuning

answered yesterday Nasser 63.2k

5

votes

3

answers

171

views

Adding elements to some sublists of unequal length

list-manipulation symbolic

modified Oct 2 at 17:02 kglr 222k

11

votes

1

answer

154

views

Conflict with hidden names

evaluation expression-manipulation implementation-details

modified Sep 21 at 10:27 Alexey Popkov 40.8k

6

votes

4

answers

98

views

How to change plot markers in ListPolarPlot [duplicate]

plotting plotmarkers

modified 22 hours ago LNah 58

4

votes

4

answers

145

views

extracting sublists

list-manipulation

answered Sep 20 at 20:46 sakra 3,403

3

votes

4

answers

137

views

The difference of Prime in Solve doesn't work

equation-solving prime-numbers

modified Sep 26 at 4:01 Bob Hanlon 67.3k

3

votes

2

answers

275

views

How can I better manage memory usage when defining functions?

performance-tuning function-construction

modified 20 hours ago march 17.9k

8

votes

2

answers

165

views

Plot, sampling, and why it does not display for some ranges

plotting sampling

modified Sep 30 at 15:56 Peter Mortensen 360

7

votes

2

answers

395

views

How to plot two axis bar chart side by side

plotting charts

modified Oct 7 at 22:58 kglr 222k

2

votes

2

answers

279

views

How can I solve the Ramanujan problem by using Wolfram language? [on hold]

programming procedural-programming

answered 2 days ago KennyColnago 12.8k

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