| ... | ... | @@ -21,7 +21,7 @@ Generic name of a function is `wderiv_operation_Nd_t`, where: | 
|  |  | * `N`: | 
|  |  | * `1` for 1D problems | 
|  |  | * `2` for 2D problems | 
|  |  | * `3` for 3D problems | 
|  |  | * `3` for [3D problems](Functions#3d-derivatives) | 
|  |  | * `t`: | 
|  |  | * `r` for real problems | 
|  |  | * `c` for complex problems | 
| ... | ... |  |