question: returns the value of the function for a given input ` x ' . concode_field_sep double a concode_elem_sep double b concode_field_sep int hashCode concode_elem_sep boolean equals concode_elem_sep double getA concode_elem_sep double getB
target: double function ( double arg0 ) { return this . a * Math . pow ( arg0 , this . b ) ; }