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- # You may run this example by doing
- #
- # ode < qcd.ode | graph -T X -C
- #
- # This simulates a coupled system of ordinary differential equations that
- # arises in the mathematical theory of quantum chromodynamics (QCD).
- #
- # Source: Griffiths et al., J. Math. Phys.
-
- f' = fp
- fp' = -f*g*g
- g' = gp
- gp' = g*f*f
-
- f = 0
- fp = -1
- g = 1
- gp = -1
-
- print t, f
- step 0, 5
-