code: def quadratic(x):
      """A quadratic B-spline.
  
      This is a special case of `bspline`, and equivalent to ``bspline(x, 2)``.
      """
      x = cp.asarray(x)
  
      return _quadratic_kernel(x)
  
label_desc: Use image node_id 3 for calling a global function with example usage: quadratic(x) and returns: _quadratic_kernel