i have made a code for finding a derivative and now im trying to use it to help me with a code for the newton raphson method: -
def derivative (f,x,h):
-
import math
-
return float(1/(2*h)) * (f(x+h) - f(x-h))
-
-
def solve (f,x0,h):
-
delta= f(x(n))/fp(x(n)
-
for x(n+1) in solve():
-
x(n)-delta
the first def works fine but i cant get the second def to work can anyone see what im doing wrong?
Oct 29 '07
10 8834
Hello!
(Newton-Raphson Method)
Can anyone describe how this code work?
What is depth, and how is solve working?
The function derivative only give us the derivative of a function:
for example: -
>>> derivative(math.sin, math.pi, 0.0001)
-
-0.9999999983354435
-
But how is solve work?
solve use derivative function. -
def derivative (f, x, h):
-
return float((f(x + h) - f(x))) / h
-
-
def solve(f, x0, h, depth):
-
if depth > 0:
-
delta = f(x0) / derivative(f, x0, h)
-
return solve(f, x0 - delta, h, depth - 1)
-
else:
-
return x0
-
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