theta_to_lambda_ARMA_02 = function(theta1,theta2){
#
# Note: 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.
# 
#-----

lambda0 = theta2 + 1
lambda1 = 1 - theta1 - theta2

return( c(lambda0,lambda1) )
  
}