Q. If a1=3 and an=(an−1)2+n then find the value of a4.Answer:
Given information: We are given the first term of the sequence, a1=3, and the recursive formula for the sequence, an=(an−1)2+n. To find a4, we need to find the values of a2, a3, and then a4 using the recursive formula.
Find a2: First, let's find a2 using the recursive formula with n=2:a2=(a1)2+2=(3)2+2=9+2=11So, a2=11.
Find a3: Next, we find a3 using the recursive formula with n=3:a3=(a2)2+3=(11)2+3=121+3=124So, a3=124.
Find a4: Finally, we find a4 using the recursive formula with n=4:a4=(a3)2+4=(124)2+4=15376+4=15380So, a4=15380.
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