Question

Tentukan suku ke 25 jika di ketahui : U2=7 dan b=2

Answer 1

B=U2-U1
2=7-u1
U1= 7-2
=5
U25 = 5+(25-1) 2
=5+(24)2
=5+ 48
=53

Answer 2

U1=5 B=2 Un=a+(n-1)b U25=5+(25-1)2 U25=5+(24)2 U25=5+48=53