WAEC - Further Mathematics (2020 - No. 22)
Find the nth term of the linear sequence (A.P) (5y + 1), ( 2y + 1), (1- y),...
(8 + 3n)y + 1
8y + 3n + 1
(8 - 3n)y + 1
8y - 3n + 1
Forklaring
Tn = a + (n - 1)d
Tn = 5y + 1 (n - 1) -3y
Tn = 5y + 1 - 3ny + 3y
Tn = 8y - 3ny + 1
Tn = (8 - 3n) y + 1