Final answer:
To find the value of a3, substitute n=3 into the given formula and calculate step by step. The value of a3 is 1.
Step-by-step explanation:
To find the value of a3, we need to substitute the value of n=3 into the given formula and calculate step by step.
Given: a1=2, an = (an-1)2 - n
a1 = 2 (Given)
a2 = (a2-1)2 - 2 = (a1)2 - 2 = 22 - 2 = 4 - 2 = 2
a3 = (a3-1)2 - 3 = (a2)2 - 3 = 22 - 3 = 4 - 3 = 1
Therefore, the value of a3 is 1.