A sequence is defined by the recursive function #f(n+1) = f(n) - 2 #. If # f(1) = 10# , what is # f(3 #)?

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Answer 1 · 2018-03-20T14:00:02

#f(3)=6#

we have

#f(n+1)=f(n)-2#

and

#f(1)=10#

to find

#f(3)#

#f(2)=f(1)-2=10-2=8#

#f(3)=f(2)-2=8-2=6#