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Find the Sum to N Terms of the Series 3 × 12 + 5 × 22 + 7 × 32 + … - CBSE (Arts) Class 11 - Mathematics

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Question

Find the sum to n terms of the series 3 × 12 + 5 × 22 + 7 × 32 + …

Solution

The given series is 3 ×12 + 5 × 22 + 7 × 32 + …

nth term, an = ( 2n + 1) n2 = 2n3 + n2

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APPEARS IN

 NCERT Solution for Mathematics Textbook for Class 11 (2018 to Current)
Chapter 9: Sequences and Series
Q: 3 | Page no. 196
Solution Find the Sum to N Terms of the Series 3 × 12 + 5 × 22 + 7 × 32 + … Concept: Sum to N Terms of Special Series.
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