Question
A = 1/2 ab Sinè
How is dA/dt related to da/dt, db/dt and dè/dt
dA/dt= 1/2 b SinTheta da/dt + 1/2 a SinTheta db/dt + 1/2 ab cosTheta dTheta/dt
This is a U = xyz form
dU/dt= xy dz/dt + ...
How is dA/dt related to da/dt, db/dt and dè/dt
dA/dt= 1/2 b SinTheta da/dt + 1/2 a SinTheta db/dt + 1/2 ab cosTheta dTheta/dt
This is a U = xyz form
dU/dt= xy dz/dt + ...