JEE Main Mathematics question
The and terms of a geometric sequence of real numbers are and respectively. If the sum to first terms of the G.P. is , then equals
Answer: 3
Solution
, so (real), and gives . gives . .
The and terms of a geometric sequence of real numbers are and respectively. If the sum to first terms of the G.P. is , then equals
, so (real), and gives . gives . .