Maxima is an open source system for the manipulation of symbolic and numerical expressions.
A few days ago, while working at an exercise paper for the lecture Information Theory, Gionni, Micheal and I were confronted with the need to solve the following equation system:
After a fruitless Google search, I recalled that some time in the past I had heard about a tool called maxima.
And, I found out, Maxima is indeed a very powerful scientific calculator.
The following code allowed us to solve the equation system:
[x, y, z]);
producing the following, exact result:
x = 98318/250043
y = 133440/250043
z = 18285/250043
Further, it is possible to get an approximated result by using the function float:
[x, y, z]));
and here is the corresponding output:
x = 0.39320436884856
y = 0.53366820906804
z = 0.073127422083402
The previous equation system is used to solve the exercise 1.2 of the exercise paper attached to this post.
The following code is used to define a function:
define('(log2(x)), (log(x) / log(2)) );
Questo post ha un allegato: scaricalo qui.