JEE Main 2019 Mathematics question
If the volume of parallelopiped formed by the vectors , and is minimum, then λ is equal to:
Answer: (C)
Solution
V = λ − λ + 1; V′ = 0 with V″ > 0 at λ = 1/√3.
If the volume of parallelopiped formed by the vectors , and is minimum, then λ is equal to:
V = λ − λ + 1; V′ = 0 with V″ > 0 at λ = 1/√3.