Unit vector along { {\PQ}}^{\to}, where coordinates of {\P} and {\Q} respectively are (2,1,-1) and (4,4,-7), is

Correct Answer is : 2i^+3j^−6k^

2 \stackrel{\^}{i}+3 \stackrel{\^}{j}-6 \stackrel{\^}{k}

-2 \stackrel{\^}{i}-3 \stackrel{\^}{j}+6 \stackrel{\^}{k}

\stackrel{\^}{-2 { {\i}}}/{7}- \stackrel{\^}{3 { {\j}}}/{7}+ \stackrel{\^}{6 { {\k}}}/{7}

\stackrel{\^}{2 { {\i}}}/{7}+ \stackrel{\^}{3 { {\j}}}/{7}- \stackrel{\^}{6 { {\k}}}/{7}

CBSE Class 12 Math 2023 Outside Delhi Set 1 Solved Paper

Question : 8 of 38

Marks: +1, -0

Unit vector along

{ {\PQ}}↖{→}

, where coordinates of

{\P}

and

{\Q}

respectively are

(2,1,-1)

and

(4,4,-7)

, is

Solution:

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