IIT JEE SEQUENCES AND SERIES If `S_n=1^2-2^2+3^2-4^2+5^2-6^2+ ,t h e n` `S_(40)=-820` b. `S_(2n...

46 views · Published 21 September 2017 · 3:42 · Indexed 20 October 2026

Channel: Doubtnut · 2017 · Education

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This is the Solution of question from Cengage Publication Math Book Algebra Chapter 6 SEQUENCES AND SERIES written By G. Tewani. You can Find Solution of all math questions from CENGAGE BOOK on our app DOUBTNUT for free. Download Doubtnut from - https://doubtnut.app.link/t4KFblCzxR

If `S_n=1^2-2^2+3^2-4^2+5^2-6^2+ ,t h e n`

`S_(40)=-820`
b. `S_(2n) gt S_(2n+2)`

c. `S_(51)=1326`
d. `S_(2n+1) gt S_(2n-1)`

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