rot_deriv2
rot_deriv2(angle, axis, dAngle1, dAxis1, dAngle2, dAxis2, d2Angle, d2Axis):
Gives a rotation matrix second derivative w/r/t some unspecified coordinate (you have to supply the chain rule terms)
angle:floatangle for rotation
axis:np.ndarrayaxis for rotation
dAngle:floatchain rule angle deriv.
dAxis:np.ndarraychain rule axis deriv.
:returns:np.ndarrayd e r i v a t i v e s
o f
t h e
r o t a t i o n
m a t r i c e s
w i t h
r e s p e c t
t o
b o t h
t h e
a n g l e
a n d
t h e
a x i s