Stack Overflow
Stack Overflow

Questions tagged [maxima]

Maxima is an opensource Computer Algebra System based on the legendary Macsyma. NOTE: This tag has NOTHING to do with 'finding the maxima' - for that, please use [max].

Maxima is an opensource Computer Algebra System based on the legendary Macsyma.

Maxima can manipulate a wide range of symbolic and numerical expressions. The system handles differentiation, integration, Taylor series, Laplace transforms, ordinary differential equations, systems of linear equations, polynomials, and sets, lists, vectors, matrices, and tensors.

Maxima yields high precision numeric results by using exact fractions, arbitrary precision integers, and variable precision floating point numbers. Maxima can plot functions and data in two and three dimensions.

More details:

841 questions
0
votes
2 answers

What does (* ::Input:: *) mean in mathematica

I am currently trying to convert a code from mathematica to maxima. I keep coming across (* ::Input:: *) and i am not sure what it means. I would appreciate any help.
user1558881
  • 225
  • 1
  • 6
  • 14
0
votes
1 answer

How can I add markers to implicit_plot?

The plot is generated by the following commands in Maxima. How can I add dots / markers at given coordinates? load(implicit_plot); ip_grid_in:[15,15]$ implicit_plot ([x^2 = y^3 - 3*y + 1, y=x^2], [x, -4, 4], [y, -4, 4], …
Ali
  • 56,466
  • 29
  • 168
  • 265
0
votes
1 answer

How do you do a Fast Fourier Transform in maxima (the computer algebra system)?

I get the basic idea of a continuous Fourier transform and I am a little fuzzy with a discrete Fourier transform and hazier still on the fast Fourier transform. I want to know how to compute and interpret the fast Fourier transform (FFT) of some…
Antolini Rubicon
  • 1
  • 1
-1
votes
2 answers

How can I find the peaks in python? I'm getting the indices. I want the value

from scipy.signal import find_peaks a=[2,3,4,1] b=find_peaks(a) print(b) I am getting the indices. But I want the values. How can I get the values of the list?
Abhilipsa
  • 11
-1
votes
1 answer

How to convert Mathcad formula to WxMaxima

I'd like to convert a Mathcad formula to WxMaxima which calculates Fourier transform of two signals. The problem is I haven't used Mathcad software until now. My primary operating system is Linux and as far as I know it is quite difficult to…
user762630
-1
votes
1 answer

Maxima's log is inconsistent with Maxima's plog and with itself?

What is the error with my thinking? Sometimes imagpart(log(-%i)) is negative: (%i1641) imagpart(log(-%i)); %pi (%o1641) - --- 2 But this…
Sadiq Moshif
  • 7
  • 2
-1
votes
1 answer

How to interchange primary and secondary axis in wxmaxima 2d plot

Usually to make a graph in wxmaxima my code is wxdraw2d(sin(x),[x,0,2*%pi]); Is there a way to write the code as wxdraw2d([x,0,2*%pi],sin(x)); in order to exchange the X and Y axes?
Imparter
  • 11
  • 3
-1
votes
1 answer

How to make "at()" function evaluate en expression?

I tried function "at" with some function inside it and then give the output to some variable. Maxima successfully differentiated the expression, but then "at" fails and the output is "at( --some successfully done function--, z=l)=0". I need "at" to…
Alexander Gornostaev
  • 55
  • 1
  • 5
-1
votes
1 answer

Maxima ODE solver cannot solve logistic equation?

I am learning how to use wxMaxima to solve differential equations, but I encounter problems already with very simple ODEs. If, for example, I want to solve the logistic differential equation and use ode2: diffeq:…
Inopinans
  • 43
  • 4
-1
votes
1 answer

Maxima plots auto save

I am using Maxima and I have a lot of resulting plots that I want to save on drive for other uses (making GIF...etc) This is what I am looking at: Is there any code that can autosave the plots instead of having to save it manually one by…
Mohammad Fawaier
  • 1
  • 1
-1
votes
1 answer

How to dynamically define multiple polynomials inside a loop in Maxima

So...I want to create five different polynomials inside a loop in order to make a Sturm sequence, but I don't seem to be able to dynamically name a set of polynomials with different names. For example: In the first iteration it would define…
Lightsong
  • 312
  • 2
  • 8
-1
votes
1 answer

Maxima - cannot plot my equation with plot2d, as "expression evaluates to non-numeric value everywhere in plotting range"

With Maxima, I want to plot the value of a parameter depending on time by solving an equation for that specific parameter. I am new to Maxima and I already struggle with the beginning of my calculations. I use the following equation m which I want…
Inopinans
  • 43
  • 4
-1
votes
2 answers

Solving simulataneous equation using maxima?

Hi I want to solve three equation, please find the details in picture. I want to find the value of alpha, h and Q in terms of alpha and h how do i do this using…
ezE
  • 19
  • 5
-1
votes
1 answer

How to get arc length of a function?

I want to get the arclength of a parametric function. For t -5..5.How can I get this ? And how can I set the nticks right here in the function to get more precise results? Something with Phytagoras? f(t):= t^2 -4*t: g(t):= t12 -2*t +3;
AngularLover
  • 364
  • 1
  • 12
-1
votes
1 answer

Python or R, efficient seperate time series into zig zag

If I have a list l = [0, 0, 1, 2, 2, 2, 1, -1, -1, -1, 0] I hope to obtain three zig-zag, a zig-zag is defined as local maxima (can be a plateau) and minima (can be a valley), as shown below, there are 3 zig zags, A, B, C while A and B overlap in…
tesla1060
  • 2,621
  • 6
  • 31
  • 43
1 2 3
…
56
57