SOLUTION: If f(x)=f(x-2)+x, and f(7)=11, find f(5).

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Question 1174551: If f(x)=f(x-2)+x, and f(7)=11, find f(5).
Answer by ikleyn(52782) About Me  (Show Source):
You can put this solution on YOUR website!
.

Take x= 5 and apply the given data.   You will have


    f(7) = f(5) + 7,

or

    11   = f(5) + 7.


It implies


    f(5) = 11 - 7 = 4.    ANSWER

Solved.