0

Guest

Courses New

Find the sum of n terms of A.P. whose rth term is 2r+3

Find the sum of n terms of A.P. whose rth term is 2r+3

Grade:11

1 Answers

Arun
25750 Points
6 years ago
Tr = 2r +3
Hence 
Tn would be = 2n +3
Now
Sim of n terms will be
Sn = \sum(2n+3)
= 2 n(n+1)/2  +3n
= n(n+1) + 3n
= n² +4n

Think You Can Provide A Better Answer ?

Other Related Questions on Algebra

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More