Question

interpolar 7 meios aritmeticos entre 3,43.

Answer 1

a1=3
a9=43
n=9

a7=a1+(n-1)r
43=3+(9-1)r
43-3=8r
40=8r
r=40/8
r=5

PA=(3,8,13,18,23,28,33,38,43)