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1- 4 In the diagram below, AB = 5BCShow that DB = =DA + =DC [5] D C 5 Given u = [2, -3, k],

1- 4 In the diagram below, AB = 5BCShow that DB = =DA + =DC [5] D C 5 Given u = [2, -3, k], v = [-2, k, 4] and w = [-3, 1, 0] form a parallelepiped of volume 30 unit, determine the value(s) of k. [5]

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