The partial derivatives with respect to the orientational parameter are

where

= (1 + 3 | ||

+ (1 - 3 | ||

-2δ_{z}^{3} + δ_{x}δ_{y}δ_{x} + δ_{y} |
. | (15.119) |

The partial derivatives with respect to the *τ*_{m} geometric parameter are

The partial derivatives with respect to the geometric parameter are

The partial derivatives with respect to the geometric parameter are

where

= (1 - | (15.123) |

The relax user manual (PDF), created 2016-10-28.