For questions concerning the open source computational software program Maxima.

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15 views

Maxima vector magnitude and cross product

I'm new to maxima. I have a little problem with computing vector's magnitude. Now I'm using such form as sqrt(v1.v1) This code looks very ugly. I thought ...
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0answers
30 views

Solving equation in maxima not placing variable on one side

I'm trying to solve an equation but the variable ($\varphi$ PHI) will not factor out to one side. Is there any other way to do this? I'm using maxima version 5.32.1 Here's the equation in latex as ...
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1answer
37 views

Simplifying with wxMaxima

I have this expression in wxMaxima: ...
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0answers
8 views

How to swap arrays in Maxima

I'm having problems in swapping arrays array(a,1,4); array(c,1,4); I tried this: [a,c]: [c,a] this: ...
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1answer
53 views

Maxima can't solve relatively simple equation.

I'm trying to solve this equation for x, with Maxima: What I am doing wrong here? ...
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46 views

Calculating grobner bases in Maxima

In the CAS Maxima the package grobner can be used for working with grobner bases. The function poly_reduced_grobner can be used ...
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3answers
125 views

Speeding up the convergence of a series

I want to speed up the convergence of a sequence involving rational expressions the expression is $$\sum _{x=1}^{\infty }\left( -1\right) ^{x}\dfrac {-x^{2}-2x+1} {x^{4}+2x^{2}+1}$$ If I have not ...
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1answer
73 views

Eliminate 2 variables from 3 equations with lots of parameters

I want to eliminate the variables x and y from these 3 equations in a way that all parameters appear in one equation without x and y: ...
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1answer
58 views

what is wmaxima doing here?

there is a problem in the calculus book I'm reading that has a function f (see below) that is not continuous at (0,0). the book says that despite this fact, both partial derivatives still exist ...
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0answers
31 views

Maxima:graphing a integral defined function

I need to graph a function in Maxima that has no integral in terms of standard non elementary functions. The function is here: $$\int_0^x \sqrt{\frac{1}{t^4}+ \left( \frac{2t\cos t\sin t + ...
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0answers
91 views

Eigenvalues of $\pmatrix{1&1\\1&2}$

I use maxima for calculation eigenvalues of this matrix: $$ \begin{bmatrix} 1 & 1 \\ 1 & 2 \end{bmatrix} $$ and I get $\frac{3\pm\sqrt{5}}{2}$ and then $[1,1]$ for some reason. Namely: ...
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0answers
25 views

Inequality testing using numerical substitution

I am seeing that CASs might fail in inequality testing, so a vague approach can be to test them for very large number of values sampled at some interval and it might give at least some approximation. ...
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0answers
56 views

How to calculate double limit in Maxima?

I want to calculate a double limit in Maxima. For instance,$$\lim_{(x, y)\to(0, 0)}\frac{x^3y}{x^6+y^2}$$ By the way, it is very interesting that I calculated it in "wolframalpha" yet it gave me the ...
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1answer
113 views

solving a non-linear (trigonometric) system of equations with two equations and two variables

I'm trying to solve the following system of equations: $$l_1*sin(\alpha)=l_2*cos(\gamma)+l_3*sin(\beta)$$ $$l_2*sin(\gamma)+l_1*cos(\alpha)=l_3*cos(\beta)+l_4$$ with the unknowns $\beta$, $\gamma$ ...
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0answers
11 views

Multiple Functions for probability

$$Pr(V1) =p + p \times Pr(V3)$$ $$Pr(V2) =p \times Pr(V1)$$ $$Pr(V4) =p \times Pr(V2)$$ $$Pr(V3) =q + q \times Pr(V3) + q \times Pr(V1) +q \times Pr(V2)$$ How would I solve for $Pr(V4)$ in maxima ...
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1answer
39 views

maxima and converting output of variable to float

I can get maxima to solve an equation but can't figure out why it won't show it's numerical value without typing the extra command/step of float(%). Is there away to automatically convert a solved ...
0
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1answer
16 views

In the software Maxima, how to get the k-th element in a list

I looked up the manual and only find functions first([1,2,3]) second([1,2,3]) third([1,2,3]) ... how to get an element by an index?
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1answer
52 views

Maxima CAS , Statistic Formula with Maxima

I am working on my graduation project which study sport players' performance. I have collected the data and finished all the surveys but then I am stuck at using the following formula to calculate ...
0
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1answer
85 views

Typing in zeta function using maxima

How do I type the symbols in for this formula into maxima (it's the zeta function)? I'm looking for the proper symbols/keys/text sequence. Example in latex to get the zeta symbol you type in \zeta ...
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2answers
51 views

Polynomial Simplification

I've been working with Maxima and its thrown me an expression like this $$ \left( \left( \left( 6\,{w}_{1}-6\right) \,{p}_{2}-6\,{p}_{1}\,{w}_{1}+6\,{p}_{0}\right) \,{w}_{2}^{2}+\left( \left( ...
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1answer
87 views

Maxima CAS : distributing exponential terms while factoring

In maxima, I have an expression that is simplified to an expression similar to the form of: tmp : c * d * (exp(a*t) - exp(b*t)) * exp(-a*t-b*t); A typical ...
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2answers
48 views

simplification in maxima : removing terms with “small” contributions from an expression

Often in applied situations there are simplifications for small x. For example $x<<1$ and $x/(1+x) \approx x$ or $(x + x^2)/c \approx x/c$. Is there a way in Maxima to carry out these sorts ...
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3answers
636 views

How to plot circle with Maxima?

I cannot get equitation plotted Expression: f1: (x^2) + (y^2) = 9; I try this command: ...
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1answer
45 views

Find out the design of a cylinder

A cylindrical can is made from tin.If it can be contain $1000 m^3$ liquid inside it then what is the parameter of design if we are oblige use the minimum amount of tin. My teacher give me this and say ...
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0answers
162 views

Grassman algebra and Maxima

How can I setup the Maxima atensor package for manipulating Grassman algebra ? The documentation just mentions a grassman option for initializing the atensor package (init_atensor). I can't find any ...
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0answers
108 views

Is maxima able to solve such integral? If no, what can?

I was sitting and decided to get a precise magnetic field equation from Bio-Savar law, and got out this handsome formula (by the way, is there a way to use ASCIIMath here on Mathematics?): $$ ...
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1answer
46 views

Maxima not finding solution to simultaneous equations when one exists

I am using Maxima to solve the following equations simultaneously: $$ 990=e^x \tag{1}$$ $$ 590=e^{(x - 10y)} \tag{2}$$ however the command ...
3
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0answers
129 views

How can I print decimals in hexadecimal in Maxima? [closed]

Setting obase works well for integer numbers, but doesn't seems to work on decimals. Is there a way to make Maxima convert decimals? Or is there function to do the ...
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1answer
44 views

How to force wxMaxima to calculate subfunctions?

I have the following code: ...
3
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2answers
359 views

partial derivative with Maxima

I have the following equation: (v * w) / ( v * ((v * w) + (1 - v) * x) ) I want to find the partial derivative with respect to v. Using the quotient rule I get: ...
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0answers
92 views

Flatten kronecker product in CAS?

I am a new user of Maxima, and I need to trace the elements of a big messy kronecker product of symbolic matrices. I tried the following to get my feet wet, but I don't get a simple, flat matrix -- ...
4
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1answer
736 views

Runge-Kutta 4 - solving system of 6 differential equations (BVP)

I'm facing a tricky problem. I need to solve a system of 6 differential equations numerically, but I don't have 6 IVP (initial value problem) conditions, instead I have 6 BVP (boundary valye problem) ...
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0answers
42 views

Question about Maxima

We want to sum up a polynomial WeylNumer(m+n-2*i,2*i+2*k+1-2*j)) for i from 0 to m, for j from 0 to n. What does "map(x->sum(sum(x,j,0,k),i,0,m),WeylNumer(m+n-2*i,2*i+2*k+1-2*j));" mean in Maxima? ...
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1answer
1k views

How to compute the upper incomplete gamma function in MATLAB?

I need to compute the upper incomplete gamma function $$\Gamma(0,i\pi K)$$ where $i=\sqrt{-1}$ and K is real. I have some basic idea about what this "special function" is, but am not used to using ...
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1answer
344 views

Complex equation in maxima

I rested on this tutorial. After issuing the command with "solve" function: %i2 solve((a-b-sqrt(-c^2+2*c*y-y^2+r^2))^2+(d-y)^2=2*r^2*(1-cos(e)),y); The output ...
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1answer
1k views

Syntax to calculate sum with maxima or wxmaxima using different variables

So I'm not sure if I'm right here but I can try: So we are having a statistics class at uni. The question is: $x_{1}= 5$, $x_{2}= 3$, $x_{3}= 7$ $y_{1}= 6$, $y_{2}= 4$, $y_{3}= 12$ Calculate ...