JEE Main Mathematics question
If , then the sum of the coefficients in the expansion of the binomial , is
Answer: (A)
Solution
The sum of the coefficients is the value at . That value is . The sum is , option (A).
If , then the sum of the coefficients in the expansion of the binomial , is
The sum of the coefficients is the value at . That value is . The sum is , option (A).