Linked Questions

0
votes
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, ...
3
votes
0answers
945 views

What does the @ symbol do in Mathematica? [duplicate]

I have the folllowing array $$h = \left(\begin{array}{cccc}1 & 0 & 0 & 0\\ 0 & f^2 & 0 & f^2 \cos\theta\\ ...
0
votes
1answer
156 views

import from Excel adds a point to each number …How to get rid of it? [duplicate]

I import an excel file ...
6
votes
1answer
170 views

Why don't optimization functions like FindMinimum work with functions like BSplineFunction? [duplicate]

Take a simple BSplineFunction and evaluate it at 0.25. ...
1
vote
1answer
436 views

Solve a function to find the optimum value of parameter in mathematica [duplicate]

I have a complicated function as shown It doesn't have a standard integration as far as I know. Now, numerical integration of the left hand side function over a set of points gives the right hand ...
0
votes
1answer
429 views

Weird subscript name in output [duplicate]

One of my first times using mathematica, I'm getting a weird Subscript(1,0) output when I try to solve a derivative. What is going on and how can I fix this?
0
votes
1answer
331 views

How to plot an arbitrary function in mathematica [duplicate]

I have plotted and manipulated the Von Mises Distribution as follows: Then I want to change the function of the distribution a bit Because I want its function be as: $$p_{\psi}(\psi|\mu,\kappa)=\...
0
votes
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: ...
0
votes
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 ...
0
votes
0answers
543 views

How to assign equation solutions to variables [duplicate]

I have 12x12 Matrix with which I have to solve the equation below: ...
1
vote
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_{-\...
10
votes
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, ...
0
votes
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 ...
1
vote
1answer
218 views

Maximising solutions of NDSolve [duplicate]

I have the following system of differential equations ...
1
vote
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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