CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Sum of N Terms of an AP

Find the sum ...

Question

Find the sum of $^{'} n^{'}$ terms of A.P. whose $r t h$ term is $2 r + 3 .$

Open in App

Solution

rth term $= 2 r + 3$
Sum $= 2 \sum_{n = 0}^{n} r + \sum_{n = 0}^{n} 3 = 2 \frac{(n) (n + 1)}{2} + 3 n$
$= n^{2} + 4 n$

Suggest Corrections

thumbs-up

0

Similar questions

Q. Write the sum to n terms of a series whose r^th term is r + 2^r.

Find the rth term of an A.P, the sum of whose first n terms is $3 n^{2} + 2 n$

Q. If the sum of

n

terms of an A.P. is

2 n + 3 n^{2}

r^{t h}

Q. Find the sum of

n

terms of the series the

r^{t h}

term of which is

(2 r + 1) 2^{r}

Q. The sum of first

8

terms of the series, whose

r^{t h}

(2 r + 1) 2^{r}

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Sum of n Terms of an AP

MATHEMATICS

Watch in App

explore_more_icon

Explore more

Sum of N Terms of an AP

Standard X Mathematics

Join BYJU'S Learning Program

CrossIcon