# nc_dqcdzeta

Produces a list of derivative matrix

\[\frac{\partial(\mathcal{A}\boldsymbol{\Gamma}_0)}{\partial\boldsymbol{\zeta}}\]

where \(\mathcal{A}\) is the aerodynamic influence coefficient matrix at the bound surfaces collocation point, assuming constant panel norm.

Each list is such that:

the

`ii`

-th element is associated to the`ii`

-th bound surface collocation point, and will contain a sub-list such that:

the

`j`

-th element of the sub-list is the`dAIC_dzeta`

matrices w.r.t. the`zeta`

d.o.f. of the`j`

-th bound surface.

Hence, `DAIC*[ii][jj]`

will have size `K_ii x Kzeta_jj`

If `Merge`

is `True`

, the derivatives due to collocation points movement are added
to `Dvert`

to minimise storage space.

To do:

Dcoll is highly sparse, exploit?