Advanced MathEasyFunction that doubles with each unit step
Advanced Math practice question
For which of the following functions does the value double every time x increases by 1?
- A. f(x) = 2ˣCorrect
- B. f(x) = 2x
- C. f(x) = x²
- D. f(x) = x + 2
Answer: A. f(x) = 2ˣ
2ˣ⁺¹ = 2·2ˣ.
Why the other answers are wrong
- B. f(x) = 2x
- 2x increases by 2 each step, not by doubling.
- C. f(x) = x²
- x² does not double: 1, 4, 9.
- D. f(x) = x + 2
- x + 2 increases by 1 each step.
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