Hi everybody, i'm new to sage and i'm having problems solving a two
equations system and in particular with a for-loop assignament.
Here's what i've got:
rV_ra=vector([v, 0, 0])
omega_ra = vector([0,0,psi_d])
rp_f = vector([l,0,0])
ans1=rV_ra+omega_ra.cross_product(rp_f)
for i in range (0,3):
sys[i]=[ans1[i]==rV_fa[i]]
but it gives the following error:
TypeError: 'module' object does not support item assignment
What does it mean? It seems a pretty simple operation to me and I can't
understand what it is that i'm doing wrong.
Thank you very much
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