code: def f_inv(t):
      if math.pow(t, 3.0) > lab_e:
          return math.pow(t, 3.0)
      else:
          return (116.0 * t - 16.0) / lab_k
  
imports: import operator
  import math
label_desc: Use image node_id 16 for calling a global function with example usage: f_inv(t) and returns: math, unknown