聯立二元一次方程式(I)
| 0 | A | B | + | ( | C | D | + |
| C | X | - | B | Y | - | A | Y |
| ) | ÷ | ( | A | X | - | B | D |
| ) | + | ( | A | Y | - | C | D |
| ) | ÷ | ( | A | X | - | B | D |
| ) | STO F1 或 F2 | ||||||
例題: 解聯立方程 x + y = 7 及 x – y = 1
按 RCL F1 ALGB 1 = 1 = 7 = 1 = 1 +/- = 1 = (顯示4) 再按 0 = (顯示3)
因此解答為 x = 4 及 y = 3.
相關資料:
聯立二元一次方程式(II) (Simultaneous Linear Equations in 2 unknowns II)
聯立三元一次方程通解 (應用聯立二元一次方程) (General solutions of Simultaneous Linear Equations in 3 unknown)
聯立三元一次方程 (Simultaneous Linear Equations in 3 unknowns)