  FUNC cot(x) CLOSED  
  FUNC inv(x) CLOSED  
  FUNC erf(x) CLOSED  
  FUNC sinh(x) CLOSED  
  FUNC cosh(x) CLOSED  
  FUNC tanh(x) CLOSED  
  FUNC coth(x) CLOSED  
  FUNC integral(REF f(),a,b) CLOSED  
