The `` longitudinal '' derivative in the Laplacian can further be reduced by considering only functions of the form The `` longitudinal '' derivation in Laplacian can be further reduced by only considering functions of the form .
Derivatif "longitudinal" dalam Laplacian boleh dikurangkan lagi dengan mempertimbangkan hanya fungsi bentuk Derivasi "longitudinal" 'dalam Laplacian boleh dikurangkan lagi dengan hanya mempertimbangkan fungsi bentuk.