Question

determine o termo geral de cada p.a -(,-4, 4, 9, 14, 18,...)- (33, 30, 21, 24,...)- (38, 35, 32, 29, 26,...)

Answer 1

an=a1+(n-1)*r
an=-4+(n-1)*5
an=-4+5n-5
an=5n-1

an=a1+(n-1)*r
an=33+(n-1)*3
an=33+3n-3
an=3n+30

an=a1+(n-1)*r
an=38+(n-1)*(-3)
an=38-3n+3
an=-3n+41

espero ter ajudado