AP Precalculuseasymcq1 pt
If f(x) = x² + 1 and g(x) = 2x, then f(g(x)) equals
A.4x² + 1
B.2x² + 2
C.2x² + 1
D.x² + 2x + 1
Explanation
Core Concept
f(2x) = (2x)² + 1 = 4x² + 1.
Correct Answer
A4x² + 1
More Unit 1: Polynomial and Rational Functions practice questions
- mediumThe zeros of f(x) = x³ − 9x are
- mediumA rational function's slant asymptote occurs when
- easyIf f(x) = x² and g(x) = x − 3, then g(f(x)) equals
- easyThe parabola f(x) = (x − 2)² + 3 has vertex
- easyThe linear function through (2, 5) with slope 3 is
Practice more AP Precalculus questions with full explanations
Practice Unit 1: Polynomial and Rational Functions Questions →