write the series using summation notation

Calculus
Tutor: None Selected Time limit: 1 Day

question 1

-7-1+5+11+...+83

question 2

1-4+16_64+...

May 28th, 2015

question 1 : -7-1+5+11 -----+83

Given series is in AP with first term as a =  -7 and common difference d = 6 .

nth term of AP is given by Tn = a+(n-1)d

therefore  83 = -7 +(n-1)6

solving we get n = 16

hence given series is sum of first 16 term of an AP there fore we can write it as 

question 2:    1-4+16 -64+...----

GIven series is in GP with a =1 and r = -4

sum of infinite series of a GP is given by :   a/(1-r)

hence we can denote it as 

Dear student: Please find the solution enclosed here with .. In case of any doubt please feel free to askā€¦ If you are having some other problem please feel free to contact me for quick & quality services..

Use my promo code: Saroj N or link: studypool.com?aid=Saroj N, and  get $10 Free.


May 28th, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
May 28th, 2015
...
May 28th, 2015
Dec 11th, 2016
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer