sage: import numpy
sage: numpy.array([[1,2,3],[4,5,6],[7,8,9]],'f')
array([[ 1., 2., 3.],
[ 4., 5., 6.],
[ 7., 8., 9.]], dtype=float32)
sage: a=numpy.array([[1,2,3],[4,5,6],[7,8,9]],'f')
sage: matrix(a)
[ 2.00000047311 512.000122547 8192.0019722]
[ 131072.031677 9.87267348858e-312 1.48958728182e-263]
[6.36598737141e-314 6.6976282025e-316 3.40280828847e-313]
sage:
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