ionsme's profile - activity

How do I normalize the columns of a matrix?

such as $A = matrix(5,5,[\text{some numbers}])$

I multiplied some matrices, as seen in the picture to get a 1 by 1 matrix. I tried to expand the contents, but it didn't work. I had to copy and paste the contents. Why didn't it work?

I wanted to be able to use the python "uncertainties" package in the sage notebooks. I have sage installed on windows. The sage terminal said pip and easy_install did not have necessary permissions. In fact, the sage terminal itself did not have write access to the packages folder.

How do I install packages like 'uncertainties'?

yes, B is a matrix, but why doesn't my code work?

I have already declared a lot of stuff. How do I see what is already declared. something like: show (variables()) and show(functions()).

Something analogous to assumptions(). And why doesn't vars() work?

I'm trying to show how a set of lines changes with a matrix transformation. The part i am having trouble with is:

 g=Graphics()

 for c in range(10):

     g.add_primitive(parametric_plot(B*vector([x,c])  , (x, 0, 2*pi)))  

 show(g)

Because it doesn't plott the lines like i wanted but instead gives me

'Graphics' object has no attribute 'options'