June 2025 Paper 3 Q3

3 The function \(\mathrm{f}\) is defined by

\[\mathrm{f}(x) = \mathrm{e}^x \quad \text{for } x \in \mathbb{R}\]

Identify which one of the following statements describes the function \(\mathrm{f}\)

Tick (✓) one box. [1 mark]

• Decreasing and concave
• Decreasing and convex
• Increasing and concave
• Increasing and convex