Question

For vector a = I + uj + wk b = 4i + 3j c = 5i + j + 7k find the value of u and w if a is perpendicular to b and c.​

Answer 1

=(2×4)−(λ×(−2))+(−1×(−2))

=8+2λ+2=0

⇒10=2λ

⇒λ=5

Answer 2

Answer:

=(2×4)−(λ×(−2))+(−1×(−2))

=8+2λ+2=0

⇒10=2λ

⇒λ=5