×

Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Click to Chat

1800-1023-196

+91-120-4616500

CART 0

• 0

MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
```
find the rth term of an A.P. .,SUM OF WHOSE FIRST n TERMS is 2n+3n^2

```
3 years ago

Arun
25311 Points
```							As we knowTn = Sn - Sn-1SimilarilyTr = Sr - Sr-1HenceTr = 2r + 3r^2 - (2(r-1) + 3(r-1)^2)Tr = 2r + 3r^2 -2r +2 - 3r^2 -3 + 6rTr = -1 +6r
```
3 years ago
Think You Can Provide A Better Answer ?

Other Related Questions on Algebra

View all Questions »

Course Features

• 731 Video Lectures
• Revision Notes
• Previous Year Papers
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Test paper with Video Solution

Course Features

• 101 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions