Advanced MathEasy–MediumValue approached by an exponential function
Advanced Math practice question
The function f is defined by f(x) = 2ˣ + 3. As x decreases without bound, the value of f(x) gets closer and closer to what number?
Answer: 3
2ˣ approaches 0 as x decreases, so f(x) approaches 3.
Common wrong answers
- If you answered 0
- 0 is what 2ˣ approaches, not f(x).
- If you answered 2
- 2 is the base.
- If you answered 5
- 5 is f(1).
More Advanced Math questions
- Easy–Medium
If f(x) = 2x² − 3, what is f(4)? - Easy–Medium
Which expression is equivalent to (2x³)(3x⁴)? - Easy–Medium
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Which expression is equivalent to (x + 5)²? - Easy–Medium
For x ≠ 0, which expression is equivalent to (x² + 3x) / x? - Easy–Medium
What are the solutions to the equation 2(x − 3)² − 32 = 0 ?
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