\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
For the quadratic function \(f(x) = \frac{1}{2}(x+3)^2 - 1\), state the following:
  1. The direction of opening (concavity).
  2. The equation of the axis of symmetry.
  3. The coordinates of the vertex.
  4. Whether the vertex is a maximum or a minimum.

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