Problem

If f(1)=7 and f(n)=f(n1)4 then find the value of f(6).

Answer

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Answer

f(6)=f(5)4=94=13

Steps

Step 1 :f(2)=f(1)4=74=3

Step 2 :f(3)=f(2)4=34=1

Step 3 :f(4)=f(3)4=14=5

Step 4 :f(5)=f(4)4=54=9

Step 5 :f(6)=f(5)4=94=13

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