From tech troubles to travel tips, IDNLearn.com has answers to all your questions. Discover thorough and trustworthy answers from our community of knowledgeable professionals, tailored to meet your specific needs.

Given points [tex]\( A(3, -5, 1), B(7, 7, 2), C(-1, 1, 3) \)[/tex]:

(a) Find the vector [tex]\(\overrightarrow{AB}\)[/tex].

[tex]\[
\begin{aligned}
\overrightarrow{AB} &= \overrightarrow{OB} - \overrightarrow{OA} \\
&= \left( \begin{array}{c}
7 \\
7 \\
2
\end{array} \right) - \left( \begin{array}{c}
3 \\
-5 \\
1
\end{array} \right) \\
&= \left( \begin{array}{c}
4 \\
12 \\
1
\end{array} \right)
\end{aligned}
\][/tex]


Sagot :

Let's solve the problem step-by-step to find the vector [tex]\(\overrightarrow{AB}\)[/tex] given points [tex]\(A, B, \)[/tex] and [tex]\(C\)[/tex].

We are provided with the coordinates of points [tex]\(A\)[/tex], [tex]\(B\)[/tex], and [tex]\(C\)[/tex]:
- Point [tex]\(A\)[/tex] with coordinates [tex]\( (3, -5, 1) \)[/tex]
- Point [tex]\(B\)[/tex] with coordinates [tex]\( (7, 7, 2) \)[/tex]
- Point [tex]\(C\)[/tex] with coordinates [tex]\( (-1, 1, 3) \)[/tex]

To find the vector [tex]\(\overrightarrow{AB}\)[/tex], we use the formula:

[tex]\[ \overrightarrow{AB} = \overrightarrow{B} - \overrightarrow{A} \][/tex]

Here are the coordinates for points [tex]\(B\)[/tex] and [tex]\(A\)[/tex]:
[tex]\[ \overrightarrow{B} = \begin{pmatrix} 7 \\ 7 \\ 2 \end{pmatrix} \][/tex]
[tex]\[ \overrightarrow{A} = \begin{pmatrix} 3 \\ -5 \\ 1 \end{pmatrix} \][/tex]

We subtract the coordinates of [tex]\(A\)[/tex] from [tex]\(B\)[/tex]:

[tex]\[ \overrightarrow{AB} = \begin{pmatrix} 7 \\ 7 \\ 2 \end{pmatrix} - \begin{pmatrix} 3 \\ -5 \\ 1 \end{pmatrix} \][/tex]

Now, perform the subtraction component-wise:

[tex]\[ \overrightarrow{AB} = \begin{pmatrix} 7 - 3 \\ 7 - (-5) \\ 2 - 1 \end{pmatrix} = \begin{pmatrix} 4 \\ 12 \\ 1 \end{pmatrix} \][/tex]

Therefore, the vector [tex]\(\overrightarrow{AB}\)[/tex] is:

[tex]\[ \overrightarrow{AB} = \begin{pmatrix} 4 \\ 12 \\ 1 \end{pmatrix} \][/tex]

So, the coordinates of vector [tex]\(\overrightarrow{AB}\)[/tex] are:

[tex]\[ (4, 12, 1) \][/tex]