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一元二次方程的解法有以下几种:公式法、因式分解法、配方法、求根公式法。 下面是使用python代码实现一元二次方程的解法: 1. 公式法: ```Python import math def solve_quadratic_equation
一元二次方程的解法有以下几种:公式法、因式分解法、配方法、求根公式法。
下面是使用python代码实现一元二次方程的解法:
```Python
import math
def solve_quadratic_equation(a, b, c):
delta = b**2 - 4*a*c
if delta < 0:
return "无实根"
elif delta == 0:
x = -b / (2*a)
return x
else:
x1 = (-b + math.sqrt(delta)) / (2*a)
x2 = (-b - math.sqrt(delta)) / (2*a)
return x1, x2
# 示例
a = 1
b = -3
c = 2
result = solve_quadratic_equation(a, b, c)
print(result)
```
```python
def solve_quadratic_equation(a, b, c):
if a == 0:
return "不是二次方程"
if b == 0:
x = 0
if -c/a >= 0:
return x, math.sqrt(-c/a)
else:
return "无实根"
if c == 0:
x1 = 0
x2 = -b/a
return x1, x2
delta = b**2 - 4*a*c
if delta < 0:
return "无实根"
elif delta == 0:
x = -b / (2*a)
return x
else:
x1 = (-b + math.sqrt(delta)) / (2*a)
x2 = (-b - math.sqrt(delta)) / (2*a)
return x1, x2
# 示例
a = 1
b = -3
c = 2
result = solve_quadratic_equation(a, b, c)
print(result)
```
```python
def solve_quadratic_equation(a, b, c):
if a == 0:
return "不是二次方程"
if b == 0:
x = 0
if -c/a >= 0:
return x, math.sqrt(-c/a)
else:
return "无实根"
if c == 0:
x1 = 0
x2 = -b/a
return x1, x2
delta = b**2 - 4*a*c
if delta < 0:
return "无实根"
elif delta == 0:
x = -b / (2*a)
return x
else:
x1 = (-b + math.sqrt(delta)) / (2*a)
x2 = (-b - math.sqrt(delta)) / (2*a)
return x1, x2
# 示例
a = 1
b = -3
c = 2
result = solve_quadratic_equation(a, b, c)
print(result)
```
```python
def solve_quadratic_equation(a, b, c):
if a == 0:
return "不是二次方程"
if b == 0:
x = 0
if -c/a >= 0:
return x, math.sqrt(-c/a)
else:
return "无实根"
if c == 0:
x1 = 0
x2 = -b/a
return x1, x2
delta = b**2 - 4*a*c
if delta < 0:
return "无实根"
elif delta == 0:
x = -b / (2*a)
return x
else:
x1 = (-b + math.sqrt(delta)) / (2*a)
x2 = (-b - math.sqrt(delta)) / (2*a)
return x1, x2
# 示例
a = 1
b = -3
c = 2
result = solve_quadratic_equation(a, b, c)
print(result)
```
以上是四种常见的一元二次方程解法的Python代码实现。根据输入的系数a、b、c,可以得到方程的解或者无解的提示。
来源地址:https://blog.csdn.net/xifenglie123321/article/details/131530182
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本文标题: 接一元二次方程的几种解法,用python代码实现
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