# Is a unique stationary point which is a local minimum already a global minimum?

Let $$f:\mathbb{R}^n\to\mathbb{R}$$ be a continuous differentiable function with a unique stationary point at $$x_0\in\mathbb{R}^n$$. If $$x_0$$ is a local minimum, is it necessarily the global minimum? (I know the answer is yes for $$n=1$$.)