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| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| public:calculator:guides:dm32_simultaneos_equations [17/04/26 19:06 BST] – [Use] 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 59: | Line 62: | ||
| * Enter each value at the prompt followed by < | * Enter each value at the prompt followed by < | ||
| * Once all values '' | * Once all values '' | ||
| - | * find the determinant of the coefficient matrix with prog '' | + | * find the determinant of the coefficient matrix with prog '' |
| - | * find the inverse of the coefficient matrix A with prog. '' | + | * this is not required for a simple solution, but might be useful for other purposes? |
| + | * **I**nvert | ||
| * < | * < | ||
| - | * Multiply | + | * **M**ultiply |
| * < | * < | ||
| * This gives the resulting '' | * This gives the resulting '' | ||
| - | ===== Example | + | ===== Examples |
| + | |||
| + | ==== 3 x 3 ==== | ||
| + | |||
| + | A system of equations with 3 unknowns '' | ||
| '' | '' | ||
| - | '' | + | '' |
| - | '' | + | '' |
| < | < | ||
| Line 158: | Line 167: | ||
| - | {{tag> | + | {{tag> |
| Page created | Page created | ||
