JEE MATHEMATICS MCQ: ADDITION OF VECTORS

1 Easy

1 of 1

Application +4 | -1

Let

a = (1,1 - 1),b = (5, - 3, - 3)

and

c(3, - 1,2)

If r is collinear with c and has length

\frac{{\left| {a + b} \right|}}{2}

then r is equals

View answer and explanation

Correct option: C

\pm c

Option C (

\pm c

) is correct because r is collinear with c, and its length is half the magnitude of a + b, which leads to r being equal to c or -c.

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AD

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F

AF:AC =