 Solution

ID: past-exam-of-the-mathematics-course-of-the-year-1-of-the-natural-sciences-course-of-the-university-of-cambridge/2025/paper-1/17/b/ii/solution

The reversed product is the dot product, a scalar represented by a

1 \times 1

n^{T} n = n_{1}^{2} + n_{2}^{2} .

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