Let and . If the resultant vector has magnitude , find the possible value(s) of…

MATHEMATICS · Subjective · CBSE · Mathematics · Vector Algebra · Vector Algebra

Problem

Let

\vec{p}=(x,\,2,\,-1)

and

\vec{q}=(1,\,-3,\,4)

. If the resultant vector

\vec{r}=\vec{p}+\vec{q}

has magnitude

7

, find the possible value(s) of

x