class_docstr: Class that defines linalg operation on an array
  
  simplest version as benchmark
  
  linear algebra recipes for multivariate normal and linear
  regression calculations
code: def mlogdet(self):
      return np.log(linalg.det(self.m))
  
imports: import numpy
  from scipy import linalg
  from statsmodels.tools.decorators import cache_readonly
label_desc: Use image node_id 12 for calling the PlainMatrixArray obj's underlying member method code with example usage: obj.mlogdet() and returns: np