Maths - Compound Functions
Pearson Edexcel Mathematics 2022
Flashcards
Composition notation
Domain of a composite function
If the domain for $g(x) = x^2 - 3$ is
\[x \in \mathbb{R}, x \ge 0\]
What is the domain for $gf(x)$ where $f(x) = 5x - 2$?
\[x \ge \frac{2}{5}\]