Online Algebra Calculator
Many of users do not use powerful Maxima computer algebra system for systematic work, but for ad hoc algebraic calculations – equations, functions, matrixes, etc. only. To do this job, it is not useful to download the whole application from a web site.
Function: invert_by_lu (<M>, <(rng generalring)>) Invert a matrix <M> by using the LU factorization. The LU factorization is done using the ring <rng>.
![Invert_by_lu Example a:matrix([1,2],[3,4]);
b:matrix([5,6],[7,8]);
a.b;
determinant(a);
c:invert_by_lu (a);
d:invert_by_lu (b);
invert_by_lu (c);
invert_by_lu (d);](http://maxima-online.org//plot.html?g=i-258431460.png&t=img&db=r28409794)
(%o1) true (%i2)