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katrin2010 [14]
1 year ago
9

The initial and terminal points of a vector are given. Write the vector as a linear combination of the standard unit vectors i a

nd j.Initial Point Terminal Point(-7, 1) (9, -3)
Mathematics
1 answer:
gtnhenbr [62]1 year ago
8 0
U=16i-4j

Explanation

any vector in the plane can be writen as a linear combination of the 2 standar unit vectors

\begin{gathered} i=\langle1,0\rangle\text{   j=}\langle0,1\rangle \\ as\text{ follows} \\ V=\langle a,b\rangle=a\langle1,0\rangle+b\langle0,1\rangle=ai+bj \end{gathered}

hence

Step 1

component form

\begin{gathered} U=\text{ terminal point -initial point} \\ U=(9-(-7),(-3-1)=\langle16,-4\rangle \end{gathered}

now, as a linear combination

U=16i-4j

I hope this helps you

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