Question

If the vectors 2i-3j+ 4k,i +2j-k and xi Nj+ 2k are coplanar then x-​

Answer 1

Answer:

hey mate here is your answer...

Step-by-step explanation:

i+3j−2k,2i−j+4k and 3i+2j+pk are coplanar

⇒

∣

∣

∣

∣

∣

∣

∣

∣

1

2

3

3

−1

2

−2

4

p

∣

∣

∣

∣

∣

∣

∣

∣

=0

⇒(−p−8)−3(2p−12)−14=−7p+14=0

∴p=2

Hence, option B.