I'm writting because I don't know how to solve this problem. I look for it in the web, but I don't
find the solution.
I have a vector with 4 variables, for example:
[54*a +3*b -c +d, 32*a -c +d, 96*b -69*c +85*d, 6*a + 9*b+3*c+9*d]
In really there is 4 equations. And I need to solve with other vector like:
I don't know the commands for do this... I search it in internet but I don't find anything.