总述:本次共解1题。其中
☆方程1题
〖 1/1方程〗
作业:求方程 (20000+20000/(1+X)+20000/(1+2X))(1+15X) = 1200(2+5X)+98235 的解.
题型:方程
解:原方程:| | ( | 20000 | + | 20000 | ÷ | ( | 1 | + | X | ) | + | 20000 | ÷ | ( | 1 | + | 2 | X | ) | ) | ( | 1 | + | 15 | X | ) | = | 1200 | ( | 2 | + | 5 | X | ) | + | 98235 |
去掉方程左边的一个括号:
| | 20000 | ( | 1 | + | 15 | X | ) | + | 20000 | ÷ | ( | 1 | + | X | ) | × | ( | 1 | + | 15 | X | ) | + | 20000 | ÷ | ( | 1 | + | 2 | X | ) | × | ( | 1 | + | 15 | X | ) | = | 1200 | ( | 2 | + | 5 | X | ) | + | 98235 |
去掉方程右边的一个括号:
| | 20000 | ( | 1 | + | 15 | X | ) | + | 20000 | ÷ | ( | 1 | + | X | ) | × | ( | 1 | + | 15 | X | ) | + | 20000 | ÷ | ( | 1 | + | 2 | X | ) | × | ( | 1 | + | 15 | X | ) | = | 1200 | × | 2 | + | 1200 | × | 5 | X | + | 98235 |
方程化简为:
| | 20000 | ( | 1 | + | 15 | X | ) | + | 20000 | ÷ | ( | 1 | + | X | ) | × | ( | 1 | + | 15 | X | ) | + | 20000 | ÷ | ( | 1 | + | 2 | X | ) | × | ( | 1 | + | 15 | X | ) | = | 2400 | + | 6000 | X | + | 98235 |
方程化简为:
| | 20000 | ( | 1 | + | 15 | X | ) | + | 20000 | ÷ | ( | 1 | + | X | ) | × | ( | 1 | + | 15 | X | ) | + | 20000 | ÷ | ( | 1 | + | 2 | X | ) | × | ( | 1 | + | 15 | X | ) | = | 100635 | + | 6000 | X |
| | 20000 | ( | 1 | + | 15 | X | ) | ( | 1 | + | X | ) | + | 20000 | ( | 1 | + | 15 | X | ) | + | 20000 | ÷ | ( | 1 | + | 2 | X | ) | × | ( | 1 | + | 15 | X | ) | ( | 1 | + | X | ) | = | 100635 | ( | 1 | + | X | ) | + | 6000 | X | ( | 1 | + | X | ) |
去掉方程左边的一个括号:
| | 20000 | × | 1 | ( | 1 | + | X | ) | + | 20000 | × | 15 | X | ( | 1 | + | X | ) | + | 20000 | ( | 1 | + | 15 | X | ) | + | 20000 | ÷ | ( | 1 | + | 2 | X | ) | × | ( | 1 | + | 15 | X | ) | = | 100635 | ( | 1 | + | X | ) | + | 6000 | X | ( | 1 | + | X | ) |
去掉方程右边的一个括号:
| | 20000 | × | 1 | ( | 1 | + | X | ) | + | 20000 | × | 15 | X | ( | 1 | + | X | ) | + | 20000 | ( | 1 | + | 15 | X | ) | + | 20000 | ÷ | ( | 1 | + | 2 | X | ) | × | ( | 1 | + | 15 | X | ) | = | 100635 | × | 1 | + | 100635 | X | + | 6000 | X | ( | 1 | + | X | ) |
方程化简为:
| | 20000 | ( | 1 | + | X | ) | + | 300000 | X | ( | 1 | + | X | ) | + | 20000 | ( | 1 | + | 15 | X | ) | + | 20000 | ÷ | ( | 1 | + | 2 | X | ) | × | ( | 1 | + | 15 | X | ) | ( | 1 | + | X | ) | = | 100635 | + | 100635 | X | + | 6000 | X | ( | 1 | + | X | ) |
| | 20000 | ( | 1 | + | X | ) | ( | 1 | + | 2 | X | ) | + | 300000 | X | ( | 1 | + | X | ) | ( | 1 | + | 2 | X | ) | + | 20000 | ( | 1 | + | 15 | X | ) | ( | 1 | + | 2 | X | ) | + | 20000 | ( | 1 | + | 15 | X | ) | = | 100635 | ( | 1 | + | 2 | X | ) | + | 100635 | X | ( | 1 | + | 2 | X | ) | + | 6000 | X | ( | 1 | + | X | ) | ( | 1 | + | 2 | X | ) |
去掉方程左边的一个括号:
| | 20000 | × | 1 | ( | 1 | + | 2 | X | ) | + | 20000 | X | ( | 1 | + | 2 | X | ) | + | 300000 | X | ( | 1 | + | X | ) | ( | 1 | + | 2 | X | ) | + | 20000 | ( | 1 | + | 15 | X | ) | = | 100635 | ( | 1 | + | 2 | X | ) | + | 100635 | X | ( | 1 | + | 2 | X | ) | + | 6000 | X | ( | 1 | + | X | ) | ( | 1 | + | 2 | X | ) |
去掉方程右边的一个括号:
| | 20000 | × | 1 | ( | 1 | + | 2 | X | ) | + | 20000 | X | ( | 1 | + | 2 | X | ) | + | 300000 | X | ( | 1 | + | X | ) | ( | 1 | + | 2 | X | ) | + | 20000 | ( | 1 | + | 15 | X | ) | = | 100635 | × | 1 | + | 100635 | × | 2 | X | + | 100635 | X | ( | 1 | + | 2 | X | ) | + | 6000 | X | ( | 1 | + | X | ) | ( | 1 | + | 2 | X | ) |
方程化简为:
| | 20000 | ( | 1 | + | 2 | X | ) | + | 20000 | X | ( | 1 | + | 2 | X | ) | + | 300000 | X | ( | 1 | + | X | ) | ( | 1 | + | 2 | X | ) | + | 20000 | ( | 1 | + | 15 | X | ) | ( | 1 | + | 2 | X | ) | = | 100635 | + | 201270 | X | + | 100635 | X | ( | 1 | + | 2 | X | ) | + | 6000 | X | ( | 1 | + | X | ) | ( | 1 | + | 2 | X | ) |
去掉方程左边的一个括号:
| | 20000 | × | 1 | + | 20000 | × | 2 | X | + | 20000 | X | ( | 1 | + | 2 | X | ) | + | 300000 | X | ( | 1 | + | X | ) | ( | 1 | + | 2 | X | ) | = | 100635 | + | 201270 | X | + | 100635 | X | ( | 1 | + | 2 | X | ) | + | 6000 | X | ( | 1 | + | X | ) | ( | 1 | + | 2 | X | ) |
去掉方程右边的一个括号:
| | 20000 | × | 1 | + | 20000 | × | 2 | X | + | 20000 | X | ( | 1 | + | 2 | X | ) | + | 300000 | X | ( | 1 | + | X | ) | ( | 1 | + | 2 | X | ) | = | 100635 | + | 201270 | X | + | 100635 | X | × | 1 | + | 100635 | X | × | 2 | X | + | 6000 | X |
方程化简为:
| | 20000 | + | 40000 | X | + | 20000 | X | ( | 1 | + | 2 | X | ) | + | 300000 | X | ( | 1 | + | X | ) | ( | 1 | + | 2 | X | ) | + | 20000 | ( | 1 | + | 15 | X | ) | = | 100635 | + | 201270 | X | + | 100635 | X | + | 201270 | X | X | + | 6000 | X | ( | 1 | + | X | ) | ( | 1 | + | 2 | X | ) |
方程化简为:
| | 20000 | + | 40000 | X | + | 20000 | X | ( | 1 | + | 2 | X | ) | + | 300000 | X | ( | 1 | + | X | ) | ( | 1 | + | 2 | X | ) | + | 20000 | ( | 1 | + | 15 | X | ) | = | 100635 | + | 301905 | X | + | 201270 | X | X | + | 6000 | X | ( | 1 | + | X | ) | ( | 1 | + | 2 | X | ) |
去掉方程左边的一个括号:
| | 20000 | + | 40000 | X | + | 20000 | X | × | 1 | + | 20000 | X | × | 2 | X | + | 300000 | X | = | 100635 | + | 301905 | X | + | 201270 | X | X | + | 6000 | X | ( | 1 | + | X | ) | ( | 1 | + | 2 | X | ) |
去掉方程右边的一个括号:
| | 20000 | + | 40000 | X | + | 20000 | X | × | 1 | + | 20000 | X | × | 2 | X | + | 300000 | X | = | 100635 | + | 301905 | X | + | 201270 | X | X | + | 6000 | X | × | 1 | ( | 1 | + | 2 | X | ) | + | 6000 | X |
方程化简为:
| | 20000 | + | 40000 | X | + | 20000 | X | + | 40000 | X | X | + | 300000 | X | ( | 1 | + | X | ) | ( | 1 | + | 2 | X | ) | = | 100635 | + | 301905 | X | + | 201270 | X | X | + | 6000 | X | ( | 1 | + | 2 | X | ) | + | 6000 | X | X |
方程化简为:
| | 20000 | + | 60000 | X | + | 40000 | X | X | + | 300000 | X | ( | 1 | + | X | ) | ( | 1 | + | 2 | X | ) | + | 20000 | ( | 1 | + | 15 | X | ) | = | 100635 | + | 301905 | X | + | 201270 | X | X | + | 6000 | X | ( | 1 | + | 2 | X | ) | + | 6000 | X | X |
去掉方程左边的一个括号:
| | 20000 | + | 60000 | X | + | 40000 | X | X | + | 300000 | X | × | 1 | ( | 1 | + | 2 | X | ) | + | 300000 | X | = | 100635 | + | 301905 | X | + | 201270 | X | X | + | 6000 | X | ( | 1 | + | 2 | X | ) | + | 6000 | X | X |
去掉方程右边的一个括号:
| | 20000 | + | 60000 | X | + | 40000 | X | X | + | 300000 | X | × | 1 | ( | 1 | + | 2 | X | ) | + | 300000 | X | = | 100635 | + | 301905 | X | + | 201270 | X | X | + | 6000 | X | × | 1 | + | 6000 | X | × | 2 |
方程化简为:
| | 20000 | + | 60000 | X | + | 40000 | X | X | + | 300000 | X | ( | 1 | + | 2 | X | ) | + | 300000 | X | X | = | 100635 | + | 301905 | X | + | 201270 | X | X | + | 6000 | X | + | 12000 | X | X | + | 6000 |
方程的解为:
X1≈-2.188564 ,保留6位小数
X2≈-0.618808 ,保留6位小数
X3≈0.051028 ,保留6位小数
有 3个解。
解程的详细方法请参阅:《方程的解法》
你的问题在这里没有得到解决?请到 热门难题 里面看看吧!