Learn math, science, English SAT & ACT from
highquaility study
videos by expert teachers
Thank you for watching the preview.
To unlock all 5,300 videos, start your free trial.
Series and Summation Notation  Problem 7
Alissa Fong
Alissa Fong
MA, Stanford University
Teaching in the San Francisco Bay Area
Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts
Capital Greek letter Sigma is used to represent a sum of numbers. Next to the sigma is a formula with a variable to input: the lowest input is on the bottom of the sigma, and you substitute in every integer until you reach the highest input that is listed on top of the sigma. Here we do some basic sigma calculations by hand in the future, you may wish to look for shortcut formulas for these types of sums.
Transcript Coming Soon!
Please enter your name.
Are you sure you want to delete this comment?
Alissa Fong
M.A. in Secondary Mathematics, Stanford University
B.S., Stanford University
Alissa has a quirky sense of humor and a relatable personality that make it easy for students to pay attention and understand the material. She has all the math tips and tricks students are looking for.
Concept (1)
Sample Problems (10)
Need help with a problem?
Watch expert teachers solve similar problems.

Series and Summation Notation
Problem 1 9,219 views_{5} ∑ i² ^{i=2} 
Series and Summation Notation
Problem 2 7,157 viewsGiven a_{n} = 3n + 1,
find S_{4}. 
Series and Summation Notation
Problem 3 7,403 viewsSummations:
8 + 27 + 64 + 125 + 216∑4 + 9 + 16 + 25 + 36 + 49 2 3 4 5 6 ∑3 + 3 + 1 + 3 + 1 + 3 4 3 16 12 49 ∑ 
Series and Summation Notation
Problem 4 1,049 views 
Series and Summation Notation
Problem 5 1,111 views 
Series and Summation Notation
Problem 6 932 views 
Series and Summation Notation
Problem 7 954 views 
Series and Summation Notation
Problem 8 922 views 
Series and Summation Notation
Problem 9 918 views 
Series and Summation Notation
Problem 10 918 views
Comments (1)
Please Sign in or Sign up to add your comment.
·
Delete
Thomas · 7 months, 1 week ago
There might be an error on the 3rd example. 18  4 = 14, not 12 :/ Also, 14 * 5 = 70. while 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 = 75 (which are all the 5's added from the 4th term to the 18th)