Question
Let $ f, g: \mathbb{R} \to \mathbb{R} $ be two functions defined as $ f(x) = |x| + x $ and $ g(x) = |x| - x $. Then $ f \circ g (x) $ for $ x < 0 $.
Let $ f, g: \mathbb{R} \to \mathbb{R} $ be two functions defined as $ f(x) = |x| + x $ and $ g(x) = |x| - x $. Then $ f \circ g (x) $ for $ x < 0 $.