Revision history [back]

Am I missing something? I feel like I'm under-interpreting your question with this answer.

sage: var('a,b,c,d')
(a, b, c, d)
sage: f1 = a*b+c^2+d
sage: f2 = b+c^2+d*8
sage: f3 = b+c^2+c*8
sage: f4 = d*b+c+c*8
sage: jacobian( [f1,f2,f3,f4], [a,b,c,d])
[      b       a     2*c       1]
[      0       1     2*c       8]
[      0       1 2*c + 8       0]
[      0       d       9       b]