Question

Let a=i+j+k,b=i- j + 2k , and ĉ = xi +(x-2)j-k , if the vector c lies in the plane of a and b
then x equals

a. 0
b.1
C. -4
d. -2​

Answer 1

Answer:

- 2

Step-by-step explanation:

Plane contains vectors a and b

Also c lies in the plane

Therefore c is parallel to b

By taking drs proportional

X= - 2