用python代码,迭代法求解x^3+e^x/2+5x-6=0的解
时间: 2024-10-07 11:04:24 浏览: 38
牛顿迭代法求解_牛顿迭代法_python_下三角矩阵求解_解方程_
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在Python中,可以使用数值方法如牛顿迭代法(Newton-Raphson method)来近似求解非线性方程`f(x) = x**3 + e**x / 2 + 5 * x - 6 = 0`。这里是一个简单的实现示例:
```python
import math
def f(x):
return x**3 + math.exp(x / 2) + 5 * x - 6
def newton_raphson_method(starting_guess, tolerance=1e-8, max_iterations=100):
for _ in range(max_iterations):
x_new = starting_guess - f(starting_guess) / f_derivative(starting_guess)
if abs(x_new - starting_guess) < tolerance:
return x_new
starting_guess = x_new
print("Maximum iterations reached without convergence.")
return None
def f_derivative(x):
return 3 * x**2 + math.exp(x / 2) + 5
# 设定初始猜测值(例如,我们可以从零开始)
initial_guess = 0
solution = newton_raphson_method(initial_guess)
print(f"Solution found using Newton's method: {solution}")
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