T1.2 Arithmetic sequences and series Flashcards
1
Q
What is an arithmetic sequence?
A
When the difference between 2 consecutive numbers in a sequence is constant
2
Q
What is the constant called?
A
Common difference. Symbol=d
3
Q
Equation of the generic term
A
u(n)=u(1)+(n-1)d
4
Q
The sum of a finite arithmetic series
A
S(n)=(n/2)*(u(1)+u(n)
