8 Find a vector of length: (2) (+) 3 a 10 units which is perpendicular to (a -4 b 3/2 units which is perpendicular to - -2 c V20 units which is perpendicular to -1 |
8 Find a vector of length: (2) (+) 3 a 10 units which is perpendicular to (a -4 b 3/2 units which is perpendicular to - -2 c V20 units which is perpendicular to -1 |
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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![**Problem 8: Vector Length and Perpendicularity**
Find a vector of length:
**a.** 10 units which is perpendicular to \(\begin{pmatrix} 3 \\ -4 \end{pmatrix}\)
**b.** \(3\sqrt{2}\) units which is perpendicular to \(\begin{pmatrix} 1 \\ -1 \end{pmatrix}\)
**c.** \(\sqrt{20}\) units which is perpendicular to \(\begin{pmatrix} -2 \\ -1 \end{pmatrix}\)
In this problem, you are tasked with finding vectors with specified lengths that are perpendicular to given vectors. Perpendicular vectors, or orthogonal vectors, have a dot product of zero. The dot product of two vectors \(\begin{pmatrix} a \\ b \end{pmatrix}\) and \(\begin{pmatrix} c \\ d \end{pmatrix}\) is defined as:
\[ a \cdot c + b \cdot d = 0 \]
When asked to find a perpendicular vector of a certain length, you must determine a vector that holds this property and also has the specified magnitude (length).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fdff7b543-7c53-4567-b2e2-82ba64a4a215%2F1b4978d4-711e-4954-afa7-018a4c3792ac%2Fqnrthz.png&w=3840&q=75)
Transcribed Image Text:**Problem 8: Vector Length and Perpendicularity**
Find a vector of length:
**a.** 10 units which is perpendicular to \(\begin{pmatrix} 3 \\ -4 \end{pmatrix}\)
**b.** \(3\sqrt{2}\) units which is perpendicular to \(\begin{pmatrix} 1 \\ -1 \end{pmatrix}\)
**c.** \(\sqrt{20}\) units which is perpendicular to \(\begin{pmatrix} -2 \\ -1 \end{pmatrix}\)
In this problem, you are tasked with finding vectors with specified lengths that are perpendicular to given vectors. Perpendicular vectors, or orthogonal vectors, have a dot product of zero. The dot product of two vectors \(\begin{pmatrix} a \\ b \end{pmatrix}\) and \(\begin{pmatrix} c \\ d \end{pmatrix}\) is defined as:
\[ a \cdot c + b \cdot d = 0 \]
When asked to find a perpendicular vector of a certain length, you must determine a vector that holds this property and also has the specified magnitude (length).
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