File mttroot/mtt/lib/examples/Mechanical/Mechanical-2D/TwoLink/TwoLink_subs.r artifact e45cd58f37 part of check-in ab744da7a6

%% Reduce  substitution statements for system TwoLink (TwoLink_subs.r)

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        trig1 := {cos(~x)*cos(~y) => (cos(x+y)+cos(x-y))/2,
                  cos(~x)*sin(~y) => (sin(x+y)-sin(x-y))/2,
                  sin(~x)*sin(~y) => (cos(x-y)-cos(x+y))/2,
                  cos(~x)^2       => (1+cos(2*x))/2,
                  sin(~x)^2       => (1-cos(2*x))/2};
       LET trig1;
END;