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Update secant_method.py #2

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45 changes: 24 additions & 21 deletions non_linear_methods/secant_method.py
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Original file line number Diff line number Diff line change
Expand Up @@ -50,25 +50,28 @@ def solve(self, x_prev, x_current):

def plot(self):
sp.plot(self.simplified_equation, show=True)

def execute(self, x_prev1, x_prev2):
solution = 1e10
prev = 0
check = 0
printlist = ""
for itr in range(self.iterations):
prev = solution
if((self.sig_figs(self.result(x_prev1), self.figures) -self.sig_figs(self.result(x_prev2), self.figures))==0):
break
solution = self.solve(x_prev1, x_prev2)
step = "iteration " + str(itr + 1) + ": " + str(solution) + "\n"
printlist = printlist + step
if self.test_tolerance(prev, solution):
check = 1
printlist = printlist + "Solution has been reached upon the given tolerance \n"
printlist = printlist+ "The root is : "+ str(solution)
break
x_prev1, x_prev2 = x_prev2, solution
if check == 0:
printlist = printlist + "Solution is not found upon the given tolerance"
return printlist
solution = 1e2
prev = 0
check = 0
printlist = ""
for itr in range(self.iterations):
prev = solution
if( itr>=1 and self.result(solution)==0):
printlist=printlist+"the root is: "+str(solution)+"\n"
check=1
break
if((self.sig_figs(self.result(x_prev1), self.figures) -self.sig_figs(self.result(x_prev2), self.figures))==0):
break
solution = self.solve(x_prev1, x_prev2)
step = "iteration " + str(itr + 1) + ": " + str(solution) + "\n"
printlist = printlist + step
if self.test_tolerance(prev, solution):
check = 1
printlist = printlist + "Solution has been reached upon the given tolerance \n"
printlist = printlist + "The root is : " + str(solution)
break
x_prev1, x_prev2 = x_prev2, solution
if check == 0:
printlist = printlist + "Solution is not found upon the given tolerance"
return printlist