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A =
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>> M
M =
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>> N
N =
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>> kron(M,N)
ans =
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>> M
M =
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>> N
N =
    0.5000         0
         0    1.0000
>> kron(M,N)
ans =
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     0     0     3     0
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>> M
M =
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         0    2.0000
>> N
N =
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         0    3.0000
>> kron(M,N)
ans =
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