code: def pdf(self, x):
      return np.exp(self.logpdf(x))
  
imports: import numpy
  import scipy.linalg
  from scipy._lib import doccer
  from scipy.special import gammaln
  from scipy._lib._util import check_random_state
  from scipy.stats import mvn
label_desc: Use image node_id 3 for calling the multivariate_t_frozen obj's underlying member method code with example usage: obj.pdf(x) and returns: np