Chapter 10: Q24E (page 542)
To describe: The representation of inequality \(x \ge - 3\) in \({\mathbb{R}^3}\).
Short Answer
It represent the plane is \(yz\)plane in \({\mathbb{R}^3}\).
Chapter 10: Q24E (page 542)
To describe: The representation of inequality \(x \ge - 3\) in \({\mathbb{R}^3}\).
It represent the plane is \(yz\)plane in \({\mathbb{R}^3}\).
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Get started for free(a) Examine if\(a \cdot b = a \cdot c\), does it follow that\(b = c\).
(b) Examine if\(a \times b = a \times c\), does it follow that\(b = c\).
(c) Examine if\(a \cdot b = a \cdot c\)and\(a \times b = a \times c\), does it follow that\(b = c\).
Show the equation \(0 \times {\rm{a}} = 0 = {\rm{a}} \times 0\) for any vector \({\rm{a}}\) in \({V_3}\).
To find a unit vector \(\left( a \right).\)
(a) Let \(P\) be a point not on the line \(L\) that passes through the points \(Q\) and \(R\). Show that the distance \(d\) from the point \(P\) to the line \(L\) is
\(d = \frac{{|{\bf{a}} \times {\bf{b}}|}}{{|{\bf{a}}|}}\)
where \({\bf{a}} = \overrightarrow {QR} \) and \({\bf{b}} = \overrightarrow {QP} \).
(b) Use the formula in part (a) to find the distance from the point \(P(1,1,1)\) to the line through \(Q(0,6,8)\) and \(R( - 1,4,7)\).
To find the angle between vectors \(a\) and \(b\) vectors.
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