Chapter 9: Problem 11
Determine the location of a point \((x, y, z)\) that satisfies the condition(s). \(y<0\)
Chapter 9: Problem 11
Determine the location of a point \((x, y, z)\) that satisfies the condition(s). \(y<0\)
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Get started for freeProve the Cauchy-Schwarz Inequality \(|\mathbf{u} \cdot \mathbf{v}| \leq\|\mathbf{u}\|\|\mathbf{v}\| .\)
Find the direction cosines of \(u\) and demonstrate that the sum of the squares of the direction cosines is 1. $$ \mathbf{u}=5 \mathbf{i}+3 \mathbf{j}-\mathbf{k} $$
Writing The initial and terminal points of the vector \(\mathbf{v}\) are \(\left(x_{1}, y_{1}, z_{1}\right)\) and \((x, y, z) .\) Describe the set of all points \((x, y, z)\) such that \(\|\mathbf{v}\|=4\)
In Exercises \(25-28,\) find the direction cosines of \(u\) and demonstrate that the sum of the squares of the direction cosines is 1. $$ \mathbf{u}=\mathbf{i}+2 \mathbf{j}+2 \mathbf{k} $$
In Exercises 49 and \(50,\) find each scalar multiple of \(v\) and sketch its graph. \(\mathbf{v}=\langle 1,2,2\rangle\) (a) \(2 \mathbf{v}\) (b) \(-\mathbf{v}\) (c) \(\frac{3}{2} \mathbf{v}\) (d) \(0 \mathbf{v}\)
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