JEE Advanced Mathematics question
is equal to
Answer: (C)
Solution
The general term is , . Split :
S = (n+2)(- {}^{n} - (- r {}^{n} .
First sum: , so the
See the full step-by-step solution
Create a free account to read the complete working (6 steps), and practise questions like this in a timed test.
Create a free account