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| Homework 16Details| Points | Problem | Comments
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| 5 | 5.37 | Start by letting X be the matrix with entries a, b, c, d in the 4 spots. The plug into the left and you will get a 2x2 matrix that is equal to the all ones matrix, which means you will have 4 equations with 4 unknowns. Plug them into each other to find a solution.
| | 5 | 5.39 | To be clear, you need to find a matrix A and a matrix B such that they matrices satisfy all 4 of the properties (not different examples for each of the 4 properties). |
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