JEE Main 2020 — Sequences And Series Question with Solution
From: JEE Main 2020 (Online) 2nd September Evening Slot
Question
Let S be the sum of the first 9 terms of the
series :
{x + k} + {x2 + (k + 2)} + {x3 + (k + 4)}
+ {x4 + (k + 6)} + .... where a 0 and x 1.
If S = , then k is equal to :
{x + k} + {x2 + (k + 2)} + {x3 + (k + 4)}
+ {x4 + (k + 6)} + .... where a 0 and x 1.
If S = , then k is equal to :
Choose an option
Show full solutionCorrect option: A
Correct answer
A-3
Step-by-step explanation
S = {x + k} + {x2 + (k + 2)} + {x3 + (k + 4)}
+ {x4 + (k + 6)} + ....
Compare with given sum, then we get
+ {x4 + (k + 6)} + ....
Compare with given sum, then we get
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