Find the value of λ so that the following vectors are coplanar.
Formula : -
Given: -
we know that vector are coplanar if their scalar triple product is zero
we have
now, using
⇒ 0 = 2(10 + 3λ) + 1(5 + 3λ) + 1(λ – 2λ)
⇒ 0 = 8 λ + 25