PA e PG

1. PG

1.1. Term Ger: an = a1q^(n-1)

1.2. Term Méd: an= (an-k x an+k )^1/2

1.3. S term: a1(q^n - 1)/ (q-1)

1.4. q= a2/a1=a3/a2

2. Séri

2.1. Coverg

2.1.1. S Inf: -1< q <1 : q^n => 0

2.1.1.1. S inf :S -a1/ (q-1) ou a1/( 1-q)

3. PA

3.1. Term Ger: an = a1 + (n-1)r

3.2. Term Méd: , (an-k + an+k )/2

3.3. S term: (a1+an)n/2