Revision history [back]
 | 1 | initial version |  |
nihao
like that
sage: A = QQ['x']
sage: x = A.gen()
sage: m = matrix(A, 2, 2)
sage: m[1, 1] = x
sage: m
[0 0]
[0 x]| | 1 | initial version | |
nihao
like that
sage: A = QQ['x']
sage: x = A.gen()
sage: m = matrix(A, 2, 2)
sage: m[1, 1] = x
sage: m
[0 0]
[0 x]
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