 Solution

ID: past-exam-of-the-mathematical-methods-i-course-of-the-university-of-oxford/2022/8/b/i/solution

A vector from the point on

L_{2}

to the point on

L_{1}

R (λ, μ) = a - c + λ b - μ d .

Choosing the opposite direction negates this vector and does not change its norm or the shortest distance.

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