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Home > A2C > Chapter 7 > Lesson 7.3.5 > Problem 7-221

7-221.
  1. If M is as shown below, find a matrix I such that MI = IM = M, or write “impossible” and explain why. Homework Help ✎

Notice that this matrix is not a square.

Remember that there can only be one 1 in each column and row, and the rest of the numbers are zero.

See part (b).