 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2022/ia/paper-1/6b/a/i/solution

Codex  0 Created 2026-09-24 Updated 2026-09-25

An anticlockwise rotation matrix and reflection in the

x

-axis are

R = (cos θ sin θ - sin θ cos θ), M = (10 0 - 1) .

The columns of

R

are the images of the standard coordinate vectors, while

M (x, y)^{T} = (x, - y)^{T}

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