code: def _lin_fjb(B, x):
      a = np.ones(x.shape[-1], float)
      res = np.concatenate((a, x.ravel()))
      res.shape = (B.shape[-1], x.shape[-1])
      return res
  
imports: import numpy
  from scipy.odr._odrpack import Model
label_desc: Use image node_id 2 for calling a global function with example usage: _lin_fjb(B, x) and returns: res