- #1
Petar Mali
- 290
- 0
Can you give me idea how to solve equation?
[tex]\Delta f=cos(\vec{k}\cdot\vec{r})[/tex]
where [tex]\Delta[/tex] is Laplacian and [tex]\vec{k}=\vec{const}[/tex]
[tex]\Delta f=cos(\vec{k}\cdot\vec{r})[/tex]
where [tex]\Delta[/tex] is Laplacian and [tex]\vec{k}=\vec{const}[/tex]