Solve the problem.
-Find a unit vector perpendicular to plane PQR determined by the points P(2, 1, 1), Q(1, 0, 0) and R(2, 2, 2).
A) $\frac { 1 } { \sqrt { 2 } } ( \mathbf { j } + \mathbf { k } )$
B) $\frac { 1 } { \sqrt { 2 } } ( \mathbf { j } - \mathbf { k } )$
C) $\frac { 1 } { \sqrt { 2 } } ( \mathbf { i } + \mathbf { j } )$
D) $\frac { 1 } { \sqrt { 2 } } ( \mathbf { i } - \mathbf { j } )$

Question

Solve the problem.
-Find a unit vector perpendicular to plane PQR determined by the points P(2, 1, 1), Q(1, 0, 0) and R(2, 2, 2). 
A) $\frac { 1 } { \sqrt { 2 } } ( \mathbf { j } + \mathbf { k } )$
B) $\frac { 1 } { \sqrt { 2 } } ( \mathbf { j } - \mathbf { k } )$
C) $\frac { 1 } { \sqrt { 2 } } ( \mathbf { i } + \mathbf { j } )$
D) $\frac { 1 } { \sqrt { 2 } } ( \mathbf { i } - \mathbf { j } )$

Quizplus · Accepted Answer

The Answer of Solve the problem.
-Find a unit vector perpendicular to plane PQR determined by the points P(2, 1, 1), Q(1, 0, 0) and R(2, 2, 2). 
A) $\frac { 1 } { \sqrt { 2 } } ( \mathbf { j } + \mathbf { k } )$
B) $\frac { 1 } { \sqrt { 2 } } ( \mathbf { j } - \mathbf { k } )$
C) $\frac { 1 } { \sqrt { 2 } } ( \mathbf { i } + \mathbf { j } )$
D) $\frac { 1 } { \sqrt { 2 } } ( \mathbf { i } - \mathbf { j } )$

Solve the Problem 12(j+k)\frac { 1 } { \sqrt { 2 } } ( \mathbf { j } + \mathbf { k } )2​1​(j+k)

Solve the Problem $\frac { 1 } { \sqrt { 2 } } ( \mathbf { j } + \mathbf { k } )$