7
Σ.
n
n=1
What is the value of this sigma notation?
Share
7
Σ.
n
n=1
What is the value of this sigma notation?
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Answer:
We can evaluate the sum the tedious way by just adding continually, but we can be smart. There is a formula for adding all the numbers up to
k
:k
∑n=1
n=k(k+1)2
In this case, it becomes:
50
∑n=1
n=50
(50+1)2
=50⋅512=1275