and . Work out .

Answer and explanation

Correct answer: C.

  1. Step 1: .
  2. Step 2: Subtract : and .
Answer
.
Why not the others: adds the vectors, treats the minus of -1 as -1 and adds the second components.

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mathbf a = [2; 3] and mathbf b = [-1; 4]. Work out… | UK GCSE