Question

(4) In an A. P. if a = 2 and t5
12, find t2,t3,t4.​

Answer 1

Answer:

term 2 = 9/2

term 3 = 7

term 4 = 19/2

Step-by-step explanation:

$a + 4d = 12 \\ 2 + 4d = 12 \\ 4d = 10 \\ d = \frac{5}{2}$

$term2 = 2 + \frac{5}{2} = \frac{4 + 5}{2} = \frac{9}{2} \\ term3 = 2 + 2 \times \frac{5}{2} = 2 + 5 = 7 \\ term4 = 2 + 3 \times \frac{5}{2} = 2 + \frac{15}{2} = \\ \frac{19}{2}$