Arithmetic Sequences and Series:
tn= a + d(n – 1)
Sum Formula:
Sn= n/2 (t1 + tn) -> use when you know the first and last term
Sn= n/2 (2t1+d (n-1)-> use when you don’t know the last term
Geometric Sequences and SeriesĀ
Arithmetic Sequences and Series:
tn= a + d(n – 1)
Sum Formula:
Sn= n/2 (t1 + tn) -> use when you know the first and last term
Sn= n/2 (2t1+d (n-1)-> use when you don’t know the last term
Geometric Sequences and SeriesĀ