Q. 155.0( 1 Vote )

# If <span lang="EN

Given, To Find: Find a vector which is parallel to Explanation: And, Let Assume

So,   Since ,   Now,  The magnitude of the required vector is 6 units given, then  Hence, The required vector is OR

Given, To find: Find a vector d which is perpendicular to both Explanation: we have and, is perpendicular to both Since, - - - (i)

And, - - - (ii)

Let us Assume vector Therefore, X + 4y + 2z = 0

Also, 3x - 2y + 7z = 0

On solving the above equation,   It is given that 2x - y + 4z = 18

2(32p) - ( - p) + 4( - 14p) = 18

64p + p - 56p = 18

9p = 18

p = 2

So, That x = 64 , y = - 2 , z = - 28

Therefore, Hence, The vector Rate this question :

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