中等MATH-FUNC-010
If f(x) = 2x + 1 and g(x) = x^2, what is f(g(2))?
A. 5
B. 9✓ 答案
C. 25
D. 8
解說
Apply g first: g(2) = 4, then f(4) = 9. The value 5 is f(2), and 25 is g(f(2)). The order of a composition is not optional.
Apply g first: g(2) = 4, then f(4) = 9. The value 5 is f(2), and 25 is g(f(2)). The order of a composition is not optional.