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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