Question: Please answer q4, q6 and q8. (with clear explanation) Unless otherwise specified, assume that all matrices in these ex- ercises are n x n. Determine

Please answer q4, q6 and q8. (with clear explanation)

Unless otherwise specified, assume that all matrices in these ex- ercises are n x n. Determine which of the matrices in Exercises 1-10 are invertible. Use as few calculations as possible. Justify your answers. 1. 2. -4 6 3. 4. NWJ -5 5. 6. WO - Lank bow UND NW - 0 7. ONWL NWOO 8. OO VID ONON

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