Linear Algebra: A Modern Introduction

Published by Cengage Learning
ISBN 10: 1285463242
ISBN 13: 978-1-28546-324-7

Chapter 1 - Vectors - 1.3 Lines and Planes - Exercises 1.3 - Page 44: 6

Answer

Vector form:$\begin{bmatrix}{x \\y \\z}\end{bmatrix} = \begin{bmatrix}{3 \\0 \\-2}\end{bmatrix}+t\begin{bmatrix}{2 \\5\\0}\end{bmatrix}$ Parametric form: $x=3+2t, y=5t,z=-2$

Work Step by Step

Vector form: $x=p+td$ This implies, $\begin{bmatrix}{x \\y \\z}\end{bmatrix} = \begin{bmatrix}{3 \\0 \\-2}\end{bmatrix}+t\begin{bmatrix}{2 \\5\\0}\end{bmatrix}$ or, $\begin{bmatrix}{x \\y \\z}\end{bmatrix} = t\begin{bmatrix}{1 \\-1\\4}\end{bmatrix}$ And Parametric equations of a line are defined as such equations which correspond to the components of the vector. Thus, the parametric form of the equation of a line is: $x=3+2t, y=5t,z=-2$ Hence, the vector form is:$\begin{bmatrix}{x \\y \\z}\end{bmatrix} = \begin{bmatrix}{3 \\0 \\-2}\end{bmatrix}+t\begin{bmatrix}{2 \\5\\0}\end{bmatrix}$ Parametric form: $x=3+2t, y=5t,z=-2$
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