Q. If f(1)=4 and f(n)=f(n−1)2+n then find the value of f(4).Answer:
Find f(2): Given f(1)=4, we need to find f(4) using the recursive formula f(n)=f(n−1)2+n. First, we find f(2). f(2)=f(2−1)2+2f(2)=f(1)2+2f(2)=42+2f(2)=16+2f(2)=18
Find f(3): Next, we find f(3) using the value of f(2). f(3)=f(3−1)2+3 f(3)=f(2)2+3 f(3)=182+3 f(3)=324+3 f(3)=327
Find f(4): Finally, we find f(4) using the value of f(3). f(4)=f(4−1)2+4 f(4)=f(3)2+4 f(4)=3272+4 f(4)=106929+4 f(4)=106933
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