 |
| |||
| in the ... unknowns (system of n linear algebraic equations in the n unknowns); in ... unknown functions (this a system of two second-order elliptic equations in two unknown functions) | |||
|
относительно ... неизвестных : 4 צירופים, 2 נושאים |
| מָתֵימָטִיקָה | 3 |
| מכשירי חשמל | 1 |