Chapter 2: Part C - Series and Method Of Differences. Flashcards
1
Q
What is the formula for the sum of integers?
A
∑r = 1/2n(n+1).
Not Given in formula booklet.
2
Q
What is the formula for the sum of squares?
A
∑r² = 1/6n(n+1)(2n+1).
Given in formula booklet.
3
Q
What is the formula for the sum of cubes?
A
∑r³ = 1/4n²(n+1)².
