Q. f(n)=−11+22(n−1)Complete the recursive formula of f(n).f(1)=□f(n)=f(n−1)+
Identify First Term: Identify the first term of the sequence using the given explicit formula. The explicit formula is f(n)=−11+22(n−1). To find the first term, f(1), we substitute n=1 into the formula.f(1)=−11+22(1−1)=−11+22(0)=−11+0=−11.
Determine Common Difference: Determine the common difference of the sequence. Since the coefficient of n in the explicit formula is 22, this indicates that the common difference, d, is 22. This is because each subsequent term increases by 22 from the previous term.
Write Recursive Formula: Write the recursive formula using the first term and the common difference. The recursive formula for an arithmetic sequence is given by:f(n)=f(n−1)+d, where d is the common difference.Since we have already determined that f(1)=−11 and d=22, we can write the recursive formula as:f(n)=f(n−1)+22.
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