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`        Find the sum of n terms of the series 3.12+5.32+7.52+.......`
one year ago

2014 Points
```							Rth term is(2r+1)*(2r-1)^2,Which is a cubic in rObviously we know ∑r^3, ∑r^2, ∑r, and ∑1, as these are standard results. So simply expand the above expression for term and then apply the standard formulas separately on each power of r!
```
one year ago
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• 101 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions