Question: Three questions on matrices

Hi EveryOne!

Let matrix M over GF(2n)/f(x). How to compute:

1. Rank of M.

2. Sum of the elements and Square of this Sum in any row of M (i.e: Sum=mi0 + mi1 + ... + min, and Sum2 ).

3. New matrix M, where in row i  mi0 = mi0/Sum2, mi1 = mi1/Sum2, ..., min = min/Sum2.

Please help me. Thank you very much.

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