JEE Main 2019 Mathematics question
The positive value of λ for which the co-efficient of in the expression is 720, is:
Answer: (A)
Solution
Need the constant term of the bracket: ⇒ r = 2: .
The positive value of λ for which the co-efficient of in the expression is 720, is:
Need the constant term of the bracket: ⇒ r = 2: .