lambda_to_theta_ARMA_02 = function(lambda0,lambda1){
#
# Notes: Checked 2012-03-16 (no errors found)
#
# Written by:
# -- 
# John L. Weatherwax                2009-04-21
# 
# email: wax@alum.mit.edu
# 
# Please send comments and especially bug reports to the
# above email address.
# 
#-----

theta1 = 2 - lambda0 - lambda1 
theta2 = lambda0 - 1

return( c(theta1,theta2) )
  
}