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Implement Newton-Raphson method to find all the possible roots of the given function and verify it with built-in functions scipy.optimize.root() in the SciPy library. Given Functions are: y= f(x)=x^2-x-1 y= f(x)=x^3-x^2-2x+1 follow the template please : # Root Finding Method import math import numpy as np import scipy as sp import matplotlib.pyplot as plt def plot_function(func, a, b): """ This function plot the graph of the input func within the given interval [a,b). """ # Your code goes here def newton_method(func, grad, x0, tol=1e-6, max_iter=100): '''Approximate solution of f(x)=0 by Newton-Raphson's method. Parameters ---------- func : function Function value for which we are searching for a solution f(x)=0, grad: function Gradient value of function f(x) x0 : number Initial guess for a solution f(x)=0. tol : number Stopping criteria is abs(f(x)) < tol. max_iter : integer Maximum number of iterations of Newton's method. Returns ------- xn : root Example -------- >>> fun = lambda x: x**2 - x - 1 >>> grad = lambda x: 2*x - 1 >>> root = newton_method(fun, grad, 1, max_iter=20) ''' # Main Loop starts here iter_count = 1 while iter_count <= max_iter: # Your code goes here iter_count += 1 print("Warning! Exceeded the maximum number of iterations.") return root # Main Driver Function: if __name__ == "__main__": # Define the 1st Function for which the root is to be found func = lambda x: x**2 - x - 1 # Define the gradient of the Function grad = lambda x: 2*x -1 # Uncomment the next two lines to use the 2nd Function #func = lambda x: x**3 - x**2 - 2*x + 1 #grad = lambda x: 3*x**2 - 2*x -2 # Call plot_function to plot graph of the function # Your code goes here x0 = 0 # Initial guess for 1st (change the value as required) # Call the Newton's method for 1st root our_root_1 = # Your code goes here # Call SciPy method (reference method) for 1st root sp_result_1 = sp.optimize.root(func, x0) sp_root_1 = sp_result_1.x.item() # Call the Newton's method for 2nd root x0 = 0 # Initial guess for 2nd root (change the value as required) our_root_2 = # Your code goes here # Call SciPy method (reference method) for 2nd root sp_result_2 = sp.optimize.root(func, x0) sp_root_2 = sp_result_2.x.item() # Print the result print("1st root found by Newton's Method = {:0.8f}.".format(our_root_1)) print("1st root found by SciPy = {:0.8f}".format(sp_root_1)) print("2nd root found by Newton's Method = {:0.8f}.".format(our_root_2)) print("2nd root found by SciPy = {:0.8f}".format(sp_root_2))

Question

Implement Newton-Raphson method to find all the possible roots of the given function and verify it with built-in functions scipy.optimize.root() in the SciPy library.
Given Functions are: y= f(x)=x^2-x-1 y= f(x)=x^3-x^2-2x+1 follow the template please : # Root Finding Method import math import numpy as np import scipy as sp import matplotlib.pyplot as plt

def plot_function(func, a, b): """ This function plot the graph of the input func within the given interval [a,b). """ # Your code goes here

def newton_method(func, grad, x0, tol=1e-6, max_iter=100): '''Approximate solution of f(x)=0 by Newton-Raphson's method.

    Parameters
    ----------
    func : function 
        Function value for which we are searching for a solution f(x)=0,
    grad: function
        Gradient value of function f(x)
    x0 : number
        Initial guess for a solution f(x)=0.
    tol : number
        Stopping criteria is abs(f(x)) &lt; tol.
    max_iter : integer
        Maximum number of iterations of Newton's method.

    Returns
    -------
    xn : root

    Example
    --------
    &gt;&gt;&gt; fun = lambda x: x**2 - x - 1
    &gt;&gt;&gt; grad = lambda x: 2*x - 1
    &gt;&gt;&gt; root = newton_method(fun, grad, 1, max_iter=20)
    '''
# Main Loop starts here
iter_count = 1
while iter_count &lt;= max_iter:
    # Your code goes here
    
    iter_count += 1

print(&quot;Warning! Exceeded the maximum number of iterations.&quot;)
return root

Main Driver Function:

if name == "main": # Define the 1st Function for which the root is to be found func = lambda x: x**2 - x - 1 # Define the gradient of the Function grad = lambda x: 2*x -1

# Uncomment the next two lines to use the 2nd Function
#func = lambda x: x**3 - x**2 - 2*x + 1
#grad = lambda x: 3*x**2 - 2*x -2

# Call plot_function to plot graph of the function
# Your code goes here

x0 = 0  # Initial guess for 1st (change the value as required)
# Call the Newton's method for 1st root
our_root_1 = # Your code goes here

# Call SciPy method (reference method) for 1st root
sp_result_1 = sp.optimize.root(func, x0)
sp_root_1 = sp_result_1.x.item()

# Call the Newton's method for 2nd root
x0 = 0 # Initial guess for 2nd root (change the value as required)
our_root_2 = # Your code goes here

# Call SciPy method (reference method) for 2nd root
sp_result_2 = sp.optimize.root(func, x0)
sp_root_2 = sp_result_2.x.item()


# Print the result
print(&quot;1st root found by Newton's Method = {:0.8f}.&quot;.format(our_root_1))
print(&quot;1st root found by SciPy = {:0.8f}&quot;.format(sp_root_1))

print(&quot;2nd root found by Newton's Method = {:0.8f}.&quot;.format(our_root_2))
print(&quot;2nd root found by SciPy = {:0.8f}&quot;.format(sp_root_2))
...expand
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y= f(x)=x^2-x-1 y = = f(x)=x^3-x^2-2x+1 Implement Bisection Method to find all the possible roots of these 2 given functions and verify it with built-in functions scipy.optimize.root() in the SciPy library. follow this given template # Root Finding Method import math import numpy as np import scipy as sp import matplotlib.pyplot as plt def plot_function(func, a, b): """ This function plot the graph of the input func within the given interval [a,b). """ # Your code goes here def bisection_method(func, a, b, tol=1e-6, max_iter=100): """ Bisection method to find the root of a function within a given interval. Parameters: - func: The function for which the root is to be found. - a, b: Interval [a, b] within which the root is searched for. - tol: Tolerance level for checking convergence of the method. - max_iter: Maximum number of iterations. Returns: - root: Approximation of the root. Example -------- >>> fun = lambda x: x**2 - x - 1 >>> root = bisection_method(fun, 1, 2, max_iter=20) """ # Check if the interval is valid (signs of f(a) and f(b) are different) # Your code goes here # Main loop starts here iter_count = 1 while iter_count <= max_iter: # your code goes here iter_count += 1 print("Warning! Exceeded the maximum number of iterations.") return root # Example usage: if __name__ == "__main__": # Define the function for which the root is to be found func = lambda x: x**2 - x - 1 # First Function # Uncomment the below line to use the Second Function # func = lambda x: x**3 - x**2 - 2*x + 1 # Second Function # Call plot_function to plot graph of the function # Your code goes here # Set the interval [a, b] for the search a_1 = 0; b_1 = 0; # For first root (change the values as required) a_2 = 0; b_2 = 0; # For second root (change the values as required) # Call the bisection method our_root_1 = # your code goes here our_root_2 = # your code goes here # Call SciPy method root, which we consider as a reference method. x0 = (a_1 + b_1)/2 sp_result_1 = sp.optimize.root(func, x0) sp_root_1 = sp_result_1.x.item() x0 = (a_2 + b_2)/2 sp_result_2 = sp.optimize.root(func, x0) sp_root_2 = sp_result_2.x.item() # Print the result print("1st root found by Bisection Method = {:0.8f}.".format(our_root_1)) print("1st root found by SciPy = {:0.8f}".format(sp_root_1)) print("2nd root found by Bisection Method = {:0.8f}.".format(our_root_2)) print("2nd root found by SciPy = {:0.8f}".format(sp_root_2))

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