Dom's blog # 4

chapter 13 -1.
formulas:
Arithmetic = tn = t1 (n-1)d
Geometric = tn = t1 x r^n-1
ex. find first 3 terms for tn = 201n
t1 = 201(1) 3
201 3 = 204
t2 = 201(2) 3
402 3 = 405
t3 = 201(3) 3
603 3 = 606
ex. find formula for n^m term :3,7,11,15 (Arithmetic)
tn = t1 (n-1)d
tn = 3 (n-1)(4)
tn = 3 4n - 4
tn = 4n-1