Question

Interpolar um meio aritmético entre 2/3 e 4/5

Answer 1

(2/3,a2,4/5)
a1=2/3
a3=4/5

an=a1+(n-1).r
a3=a1+(3-1).r
4/5=2/3+2r
4/5-2/3=2r
3.4/15-5.2/15=2r
12/15-10/15=2r
2/15=2r
2r=2/15
r=2/15:2
r=2/15.1/2
r=1/15

a2=?

a1+r=
2/3+1/15=
5.2/15+1/15=
10/15+1/15=
11/15

a2=11/15