class_docstr: negative quadratic function
  
      
class_docstr_tok: ["negative","quadratic","function"]
code: def func(self, x):
      return -np.power(x, 2)
  
imports: import numpy
label_desc: Use image node_id 1 for calling the NegSquareFunc obj's underlying member method code with example usage: obj.func(x) and returns: unknown