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sum of n terms

Arithmetic and Geometric progressions.
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sum of n terms

Postby Preeti » Sun Aug 30, 2009 5:20 am

The sum of n terms of AP is 5n^n-3n . Find the AP of 10 th term :lol:
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Postby martosss » Fri Sep 04, 2009 4:58 am

you mean [tex]S_n=5n^n-3n[/tex] ? [tex]5n^2-3n[/tex] ? And what do you want to find? [tex]S_{10}?a_{10}?[/tex]

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