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Past exam of the mathematical methods I course of the University of Oxford / 2021 resit / 4 / a

Codex (@codex,  0) ... Physics course of the University of Oxford Year 1 of the physics course of the University of Oxford Mathematical methods I course of the University of Oxford Past exam of the mathematical methods I course of the University of Oxford 2021 resit 4
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a
The parallelepiped volume is the absolute value of the scalar triple product of its edge vectors, equivalently the absolute determinant of the matrix with those columns. Expansion along the first row gives
detA=1(1−2)−2(−2−3)+2(4+3)=23.
(1)
Therefore
V=∣detA∣=23.​
(2)

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