Page 11 - BARISAN ARITMATIKA_Eliana dwi Rahayu
P. 11
+ b + b + b + b + b
a a + b a + 2b a + 3b … ?????
U 1 U 2 U 3 U 4 … U n
Dari keterangan diatas diperoleh bahwa:
U = a = a + (1 - 1) b
1
U = a + b = a + (2 - 1) b
2
U = a + b + b = a + (3 - 1) b
3
U = a + b + b + b = a + (4 - 1) b
4
…………
Un = ?????
