0
votes
0answers
50 views

Which method to use for finding maximum without actually computing optimization function explicitly?

I am new to Mathematica and I am currently working on an optimization problem. The optimization function that I have easy to calculate for some assignment of variable but it is very difficult to ...
3
votes
3answers
70 views

Minimizing Multiple Functions

I'm trying to write a script that will minimize a given set of functions. The homework problem I've been given lists a set of dietary information, and I'm supposed to build the optimal salad based on ...
0
votes
1answer
54 views

Permutation with a condition [duplicate]

I need to create a set A={“a”, “b”, “c”, “d” “e”} and print all the permutations of the set with lenght 3 that satisfy the condition:element "a" has to be ahead of "c" and "d" has to occur atleas ...
0
votes
1answer
58 views

Problem using NDSolveValue

Good afternoon, fellas. Could anyone here help me solve this problem? ...
1
vote
0answers
30 views

Simplification with absolute value

I have a long expression that has absolute values in the exponent. Some parts of the expression would clearly simplify if one assumes that the power is an odd or even integer. When I give one of this ...
0
votes
1answer
59 views

How to shorten/simplify my plotting code

Is there a way to simplify and shorten my code? ...
0
votes
0answers
87 views

Plotting a numerical integration

I have the following code to calculate a numerical integral for any given a: ...
1
vote
1answer
39 views

InfiniteLine Woes [closed]

I am puzzled that the InfiniteLine below intersects with only one of the two points. ...
0
votes
0answers
38 views

Solve an integral equation: to fit the given data with an integral of two functions?

I am trying to find an efficient way to solve the following equation $$h\left(b\right)=\int_{0}^{b}f\left(\frac{b-c}{1-c}\right)\frac{g\left(c\right)}{1-c}dc$$ where for $h(b)$ I have the data ...
0
votes
0answers
43 views

How can I make rows into columns? [closed]

I want create new columns and rows from the following list of data using Mathematica: {{11, 12, 13}, {21, 22, 23}, {31, 32, 33}} I want the new for be like this: ...
3
votes
1answer
156 views

I want to construct a function than the output is “Sequence”

For example if the input is x and x<10 the output is Sequence[x,0],if x>10 the output is Sequence[0,x] but obviously ...
2
votes
1answer
47 views

Problem with plotting data (.csv)

I have a problem with plotting the data of a recent experiment. I'm quite new to Mathematica, but searched the documentation and forums without solving my issue. My data is stored in a .csv document, ...
-1
votes
1answer
60 views

Module whose input is a function of 2 variables [on hold]

I need to make a Module whose input is a function of 2 variables and 2 variables m,n so i can make a Matrix with Array. Basicaly, I need this: ...
0
votes
0answers
78 views

Finding the numerical solution to a polynomial of a high degree [on hold]

I would like to numerically solve the following equation for ρ and use the obtained values of ρ to calculate the values of VR ...
0
votes
2answers
69 views

Plot ParametricNDSolve

I am trying to plot the probability of a molecule being in a certain state via the numerical solution of the Schrödinger's equation of molecule in an oscillating electric field (in a rotating system). ...
0
votes
0answers
37 views

How to find points of the external cut of a segment by a nonconvex polyhedron [on hold]

It gives me empty {} when I'm trying to Solve[..]. What's wrong? ...
1
vote
1answer
87 views

Equation solution using minimization

I have an equation F[x,y]=0. I need to plot y as a function of x. Due to the properties of ...
5
votes
1answer
181 views

Find exponential generating function from the first few terms

The function FindGeneratingFunction computes the ordinary generating function of a sequence, given a sufficient number of initial terms. I have two questions in ...
0
votes
0answers
22 views

To make a list from a For Loop [duplicate]

I have been working on a for loop and generating around 2500 integers from that. Now I am interested in calculating the Max or Min of those numbers. How to create the list of those numbers? So that ...
1
vote
0answers
43 views

Reordering numerically calculated eigenvalues assuming smooth dependence on a parameter

As was discussed in a different question here on SE (link) if you compute eigenvalues numerically of a matrix which depends on a parameter y, the resulting plot of ...
0
votes
0answers
27 views

Structure of the output of a DynamicModule [on hold]

I have a DynamicModule function which is used in a recursive function built with patterns. In order to understand how the recursive function works, I need to know ...
6
votes
4answers
142 views

How to eliminate variables when using Solve[]

In certain problems, we need to solve systems of equations and get results in terms of just selected variables. For example, how could we solve eqn==0 below for ...
0
votes
1answer
64 views

Are there any open source projects related to signal processing

I am going to make a program related to audio signal processing . Are there any open source projects related to it?
6
votes
1answer
228 views

Compiling a function that takes lots of optional arguments

I have a function that takes lots of optional arguments (basically some design parameters, about 10 of them) and performs some basic algebraic calculations involving complex numbers with the options. ...
0
votes
0answers
41 views

Multidimensional integration does not work

I am trying to solve an integral over Cubic Birillioun Zone, but after taking a long time Mathematica give nothing in return and just repeating the integral form, here is my integral, ...
0
votes
0answers
43 views

How to calculate frequency from waveform? [closed]

How to calculate frequency from waveform in mathematica??? Voltage waveform is shown below. ...
0
votes
0answers
30 views

How to draw a revolute joint and Prismatic joint? [closed]

and I want to add a bar on the surface of the blue cubiod so that I can move the joint with the bar. Also it's best to add a function code(a code to describe how it moves)
8
votes
1answer
197 views

Why is `Block` significantly faster than `ReplaceAll` for inputting variable values

Given that the documentation for FindMinimum uses ReplaceAll for its various examples of what to do with the found solution to ...
2
votes
0answers
48 views

How can I fit the parameters describing a given 3D object such that its projected shape best matches the silhouette observed from a given location?

[I'm reposing my previous question to make it clearer]. I have data which are the longitudes (l) and latitudes (b) for the vertices of the edges of a shape as it appears to an observer at a given ...
0
votes
0answers
35 views

Handling *.in and *.out files

im trying to use Mathematica in solving of algorithm tasks like this one: http://poj.org/problem?id=1274 When i was doing those in c/c++ i was able to easily pass input/output in Windows command line ...
1
vote
0answers
57 views

Optimizing orthogonal nonlinear regression code

I'm doing a simulation problem on the Langmuir adsorption model, where I need to obtain the model parameters from simulated data using the orthogonal nonlinear least-squares regression method. Here is ...
2
votes
1answer
87 views

How can I run a summation numerous times?

I have been working on code for finding the Allan plot of generated white noise, however, I cannot figure out a way to automate it for a different range of numbers. My code is as follows: ...
1
vote
4answers
86 views

How find constant term of quadratic with square already completed?

Suppose I have a quadratic polynomial in two variables x and y in which the squares with respect to ...
2
votes
1answer
22 views

Print to console bis

In the answer to this question, one explains how to use a function PrintToConsole[...] to print output to the console. My question: can you make a global definition that will automatically ...
0
votes
0answers
16 views

How to calculate whether a ray intersects an arbitrarily oriented bounding box? [migrated]

The bounding box is not axis-aligned. It can be rotated. I now have the origin of the ray, and direction and each coordinate of the eight vertices of the bounding box. what can I do to find out this ...
3
votes
0answers
65 views

Map an Argument to a list of functions

I want to "map" an argument to a list of functions. Here is the concrete Problem. I generate a list "Messungfit" of functions: ...
0
votes
0answers
37 views

Defining initial conditions [on hold]

how do I define the initial condition before solving a partial differential equation in order to compare the solution to that of a model?
1
vote
3answers
88 views

How to map over the corresponding elements of matrices [closed]

I'm working on some genetic algorithm code, and I'm seeking help to select the corresponding elements of a matrix in order to perform crossover on the chromosomes in population of individuals I want ...
2
votes
1answer
80 views

How to make a 3D plot using polar coordinates?

From the beginning: I have function $u(r)$ and radial symmetry in system. Also I've got results as data array ${u_i(r_i)}$. And I want to plot it as $u(x,y)$. Due to radial symmetry its gonna be like ...
2
votes
0answers
43 views

Find the numerator of 6/8 [duplicate]

The statement Numerator[6/8] evaluates to 3. Numerator[Hold[6/8] does not work. What function NewNumerator[6/8] evaluates to 6?
0
votes
0answers
6 views

How to find the mode when none of the terms repeat? [migrated]

What is the mode of a series / distribution of values when none of the values of the distribution are repeated , for example : What is the mode of 1 , 3 , 45, 67 , 89 , 100
1
vote
1answer
60 views

Plot x and y ErrorBars from file

If I have a set of data like this one saved in a txt file ...
0
votes
2answers
109 views

recurrence equation, result members don't contain the number 5 [closed]

print the first 5 members of the array a[n+1]=3*a[n]+7 which don't contain the number 5. a1=6. so a[2]=3*6+7=25, but 25 has the number 5 so we go to a[3]. a[3]=25*3+7=82 <--- this is OK... and ...
-1
votes
0answers
30 views

Estimating fundamental matrix for stereo pair

I want to calculate fundamental matrix for stereo pair. Matlab has this function - estimateFundamentalMatrix. Is there an analog in Mathematica? If no how I can calculate it?
7
votes
1answer
56 views

Question about TransitiveReductionGraph

In Mathematica 10.0 and 10.1, according to the documentation of TransitiveReductionGraph: The transitive reduction h of a graph g is a graph that has the same ...
4
votes
1answer
68 views

What is the status of the FindMinimum method “QuadraticProgramming”?

As a method option to FindMinimum "QuadraticProgramming" is still a valid option. It has the advantage of being significantly ...
0
votes
1answer
106 views

How to convert a system of parametric equations?

I have a system of parametric equations (t is a parameter) ...
4
votes
2answers
154 views

When are numerical expressions identical

Very elementary: 2 + 3 == 5 evaluates to True and 5 == 5 evaluates to ...
0
votes
1answer
35 views

Plotting partial sums of Taylor Function

I need to plot the partial function: $T_f(x)=\log 2+\sum_{k=1}^{\infty}\frac{(-1)^{k+1}}{2^kk}(x-2)^k$ for $n=2$,$n=4$ and $n=6$ on the same plot over the interval $[-\frac{1}{2},4]$ and also the ...
0
votes
0answers
42 views

Constrained optimization and problem with complex numbers

I am trying to solve a constrained optimization problem with an implicitly defined function $\pi$. The problem is non linear and of high order, so I use numerical methods instead. The code I use is: ...

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