Patterns Flashcards
1
Q
What’s the formula for LINEAR patterns?
A
Tn = a + (n-1)d
a=1st term
d=constant difference
2
Q
What is the formula for QUADRATIC patterns?
A
Tn = an^2 + bn + c
3
Q
How do you work out a, b and c in quadratic sequence?
A
2a = 2nd difference
3a + b = T1 of 1st difference
a + b + c = T1 of original sequence
