Function g can be thought of as a translation (shifted) version of f(x)=x^2
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Using the recursive and explicit formula
first three terms are 23,16, 9 and it is same for both . So they have same sequences .
Recursive function can be applied using previous term . So we use Explicit formula to find f(20)
f(20)=-110
Given :
Recursive function for sequence f: f(1)=23,f(n)=f(n−1)−7
explicit formula for the term is f(n)=23−7(n−1).
Lets find out first three terms using both the formulas
Recursive function , Replace n=2,3 to find out second and third terms
So first three terms are 23,16, 9
Lets do the same using explicit formula but we take n=1,2,3
First three terms using explicit formula is 23,16,9
From these we can see that these definitions have same sequence.
Now we find out f(20). To find f(20) we use explicit formula because to use recursive function we need f(19) to find f(20)
Recursive function can be applied using previous term
The value of f(20)=-110
Learn more : brainly.com/question/17139881
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