题目
题目

MATH1061/1002/1021 (ND) MATH1061 Canvas Quiz 5

单项选择题

Let \(P\), \(Q\) and \(R\) be the points \[P = \left (-1, 2, -2\right ), Q = \left (-3, 3, -3\right ), R = \left (3, -3, 1\right ).\] Find a unit vector orthogonal to the plane through \(P\), \(Q\) and \(R\) that has a positive 1st component. What is its 3rd component?

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思路分析
We are given three points P, Q, R and asked to find a unit vector orthogonal to the plane through them that has a positive first component, then report its third component. First, compute two direction vectors in the plane: Q - P and R - P. From P = (-1, ......Login to view full explanation

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