class_docstr: :math::
  dx_t &= \mu dt + \sigma dW_t
class_docstr_tok: [":","math",":",":","dx_t","&","=","\\mu","dt","+","\\sigma","dW_t"]
code: def _drift(self, *args, **kwds):
      return self.mu
  
imports: import numpy
  from scipy import stats, signal
  import matplotlib.pyplot
label_desc: Use image node_id 2 for calling the ArithmeticBrownian obj's underlying member method code with example usage: obj._drift() and returns: self