Skip to main content
likehust's user avatar
likehust's user avatar
likehust's user avatar
likehust
  • Member for 5 years, 11 months
  • Last seen more than a month ago
  • China
7 votes
2 answers
265 views

Which version of Mathematica did DiracDelta become to the derivative of HeavisideTheta from that of UnitStep?

4 votes
4 answers
141 views

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

4 votes
2 answers
148 views

How to simplify the plot codes or provide a new method to obtain the ideal PDF?

4 votes
1 answer
151 views

How to speed up the calculation process of a symbolic matrix?

3 votes
0 answers
205 views

How to call an old build-in function in a new version of Mathematica?

3 votes
1 answer
93 views

Using the elements of one Matrix to form a new Matrix with specified rules

3 votes
0 answers
131 views

How to use the old kernel in a newer version of MMa

3 votes
2 answers
85 views

How to check if all the members of a list lies in specific ranges based on another list?

2 votes
1 answer
116 views

Correcting HeavisideTheta in MM11.3 for generating the same results with UnitStep in MM5.2

2 votes
1 answer
158 views

How to speed up the calculation of a multi-dimension matrix involving symbolic integral?

2 votes
1 answer
101 views

Why does the integration of this symbolic matrix slow down after compilation?

2 votes
1 answer
1k views

How to set the position of the axis label in program?

2 votes
1 answer
58 views

How to join two graphics generated from paired-points lists?

2 votes
1 answer
69 views

Arrange an expression based on variables' names

2 votes
0 answers
100 views

Why does HeavisideTheta give different value at the point 0 and 0.?

1 vote
1 answer
68 views

Why do the points in a curve are connected to those in another after FindClusters?

1 vote
2 answers
85 views

Arrange an expression based on functions' names

1 vote
2 answers
64 views

How to reorganize a polynomial including exponents to the simplest form?

1 vote
3 answers
224 views

How to replace the number of each element of a matrix with a subscript?

1 vote
1 answer
109 views

Decompose expression into specified form of partial fractions

1 vote
1 answer
98 views

Why does it fail to assign values to variable in Grid? [closed]

1 vote
1 answer
382 views

How to run multiple functions simultaneously by multi-core CPU in Windows?

1 vote
1 answer
949 views

How to set HeavisideTheta[0] to 1 permanently

0 votes
1 answer
233 views

The derivation and simplification of the functions HeavisideTheta and Dirac

0 votes
1 answer
145 views

How to convert decimals to integers and joint them to a string for exporting

0 votes
1 answer
65 views

How to obtain the grouped separate line curves from the disorder data?

0 votes
0 answers
104 views

Speed up the integration of HeavisideTheta over the range from zero to infinity