16Hit1600
Advanced MathVery hardValue from a tripling relation

Advanced Math practice question

A function f satisfies f(x + 1) = 3·f(x) for all values of x, and f(2) = 18. What is the value of f(0)?

Answer: 2

f(1) = 18/3 = 6 and f(0) = 6/3 = 2.

Common wrong answers

If you answered 6
6 is f(1).
If you answered 12
12 subtracts 3 twice instead of dividing.
If you answered 54
54 is f(3), moving the wrong way.

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