Question

Encapsulate the following Python code from Section 7.5 in a function named my_sqrt that takes a as a parameter, chooses a starting value for x, and returns an estimate of the square root of a.

while True:
y = (x + a/x) / 2.0
if y == x:
break
x = y

Answer 1

def my_sqrt(a):

  x = float(input("Enter starting value for x: "))

  while True:

    y = (x+a/x)/2

    if x == y:

      break

    x = y

  return x




a = float(input("Enter a number:"))

print("Estimated square root is {}".format(my_sqrt(a)))