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| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| public:calculator:guides:dm32_simultaneos_equations [17/04/26 19:10 BST] – [3 x 3] john | public:calculator:guides:dm32_simultaneos_equations [18/04/26 06:53 BST] (current) – [Use] john | ||
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| Line 35: | Line 35: | ||
| '' | '' | ||
| + | |||
| This is effectively | This is effectively | ||
| Line 50: | Line 51: | ||
| The unknown matrix is obtained by multiplying '' | The unknown matrix is obtained by multiplying '' | ||
| + | They are entered sequentially in the order | ||
| + | '' | ||
| ===== Use ===== | ===== Use ===== | ||
| Line 61: | Line 64: | ||
| * find the determinant of the coefficient matrix with prog '' | * find the determinant of the coefficient matrix with prog '' | ||
| * this is not required for a simple solution, but might be useful for other purposes? | * this is not required for a simple solution, but might be useful for other purposes? | ||
| - | * find the inverse of the coefficient matrix A with prog. '' | + | * **I**nvert |
| * < | * < | ||
| - | * Multiply | + | * **M**ultiply |
| * < | * < | ||
| * This gives the resulting '' | * This gives the resulting '' | ||
| Line 71: | Line 74: | ||
| ==== 3 x 3 ==== | ==== 3 x 3 ==== | ||
| - | '' | + | A system of equations with 3 unknowns '' |
| - | 8x + 11y - 6z = 17 | + | |
| - | 4x + 15y + 12z = 14'' | + | |
| + | '' | ||
| + | |||
| + | '' | ||
| + | |||
| + | '' | ||
| < | < | ||
| Line 159: | Line 167: | ||
| - | {{tag> | + | {{tag> |
| Page created | Page created | ||
