# der_Ccrv_by_v¶

Being C=C(fv0) the rotational matrix depending on the Cartesian rotation vector fv0 and defined as C=crv2rotation(fv0), the function returns the derivative, w.r.t. the CRV components, of the vector dot(C,v), where v is a constant vector.

The elements of the resulting derivative matrix D are ordered such that:

$d(C*v) = D*d(fv0)$

where $$d(.)$$ is a delta operator.