Q. If f(1)=4 and f(n+1)=f(n)2+4 then find the value of f(3).Answer:
Given initial condition and formula: We are given the initial condition and the recursive formula:f(1)=4f(n+1)=f(n)2+4We need to find f(3). To do this, we will first find f(2) using the given recursive formula.Substitute n=1 into the recursive formula to find f(2).f(2)=f(1)2+4
Calculate f(2): Now we calculate f(2) using the value of f(1). f(2)=42+4 f(2)=16+4 f(2)=20 We have found f(2) without any mathematical errors.
Use f(2) to find f(3): Next, we use the value of f(2) to find f(3) using the recursive formula again.Substitute n=2 into the recursive formula to find f(3).f(3)=f(2)2+4
Calculate f(3): Now we calculate f(3) using the value of f(2). f(3)=202+4 f(3)=400+4 f(3)=404 We have found f(3) without any mathematical errors.
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