Question

Determine os 5 primeiros termos da sequência:
a) an= 2n+5
b)an= 3n+2
c) an= n.5

Answer 1

a) an= 2n+5  IN= {0,1,2,3,4}
an= 2*0+5= 5
an=2 *1 +5=7
an=2*2 +5=9
an=2*3+5=11
an=2*4+5=13
an={5,7,9,11,13}

b)a) an= 3n+2 IN= {0,1,2,3,4}
an= 3*0+2= 2
an=3 *1 +2=5
an=3*2 +2=8
an=3*3+2=11
an=3*4+2=14
an={2,5,8,11,14}

c)a) an= 5n IN= {0,1,2,3,4}
an= 5*0= 0
an=5*1 =5
an=5*2 +=10
an=5*3=15
an=5*4=20
an={0,5,10,15,20}