Question: Differential Geometry - dual

How do I find the dual of this? Thanks for your attention! F := evalDG(E1*dt &t dx + E2*dt &t dy + E3*dt &t dz - E1*dx &t dt - B3*dx &t dy + B2*dx &t dz - E2*dy &t dt + B3*dy &t dx - B1*dy &t dz - E3*dz &t dt - B2*dz &t dx - B1*dz &t dy Jim Bowmer.
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