Other Useful Things Flashcards
(10 cards)
1
Q
Arithmetic Sequence formula
A
Un = a + (n - 1)d
2
Q
Arithmetic SERIES formula
A
Sn = n/2 (2a + (n - 1)d)
3
Q
Geometric SERIES formula
A
Sn = a(1 - r^n) / (1 - r)
4
Q
Prove arithmetic series
A
Write out Sn twice then add them
5
Q
Prove geometric series
A
Write Sn out as (1)
Then times it by r as (2)
Then do 1-2
Factorise Sn out on left side
Divide rightside by (1 - r)
6
Q
Area of a Cylinder
A
2πrh + 2πr^2
7
Q
Volume of a Cylinder
A
πr^2h
8
Q
ON CALC:
Binomial PD: is for what?
A
P(X = ?)
9
Q
ON CALC:
Binomial CD: is for what?
A
P(X <= ?)
10
Q
Binomial distribution:
how to do X>=?
A
1 - P(X<=?)
