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4. Determine the volume of the parallelepiped formed by the vectors a = -i+2j+4k, b=3i-j-2k and c = -6i+2j - 4k. (3 marks) 5.

4. Determine the volume of the parallelepiped formed by the vectors a = -i+2j+4k, b=3i-j-2k and c = -6i+2j - 4k. (3 marks) 5. Given the following matrices 4-123] 8-13] 0-1-1 -3 2] compute each of the following operations if it is defined. If an expression is undefined, explain why. (i) 4A-BT. (3 marks) (ii) B. (2 marks) (iii) C. (2 marks)

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