Practice question

MCQ

Question

Find the value of a, b, c and d if: [ array20c a - b&2a + c 2a - b&3c + d array ] = [ array20c - 1&5 0&13 array ]

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a = 1, b = 1, c = 3, d = 4 a = 1, b = 1, c = 4, d = 3 a = 2, b = 1, c = 3, d = 4 a = 1, b = 2, c = 3, d = 4 Correct

We can see that after simplifying, a = 1, b = 2, c = 3, d = 4 is left. The method is simple: formula → substitution → calculation → answer.

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