# Linked Questions

2answers
406 views

### How to contourplot a function defined via findroot? [duplicate]

when I use contourplot, the system will simplify the expression first with its parameters holded. However some expressions can not be simplified first without inputting parameters, for example, ...
0answers
945 views

1answer
530 views

### Trouble with Nested Do Loops [duplicate]

I have: myres = {}; Do[ Do[ Append[myres, {j, i}], {i, 1, 3} ], {j, 1, 5} ] However, when I run the code and then enter: ...
1answer
596 views

### Do loop - variable does not change [duplicate]

I got the follwing code which should add a '1' 100 times to an empty list. plotVals = {} Do[Append[plotVals, 1], {l, 1, Nmax}]; The output is again an empty ...
0answers
543 views

### How to assign equation solutions to variables [duplicate]

I have 12x12 Matrix with which I have to solve the equation below: ...
1answer
204 views

### How are Fourier transformations calculated? [duplicate]

Lets say my function is $$f(t)=\left\{\begin{matrix} 1 &, -T_p/2\leq t \leq T_p/2\\ 0& , |t|>T_p/2 \end{matrix}\right.$$ than a Fourier transformation is calculated F(j\omega)=\int_{-\...
1answer
201 views

### Core functions or operations that every aspiring Mathematica programmer should know? [duplicate]

I am aware that there are common yet very powerful operations like Map, Thread, Apply, ...
1answer
155 views

### How to delete some elements from a list? [duplicate]

This question is asked quite often but none of the answers I found seem to do what I want. I have a list ...
1answer
218 views

### Maximising solutions of NDSolve [duplicate]

I have the following system of differential equations ...
1answer
131 views

### How to release the space took up by specify variable [duplicate]

Actually relate my this post.But I don't want to clear all memory took up by Mathematica. ...

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