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June 10, 2019 18:16
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I explained to a friend how sqrt can be implemented.
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| import math | |
| def sqrt(x_0, guess, tol): | |
| x = guess | |
| while math.fabs(x*x - x_0) > tol: | |
| x = (x*x - x_0) / (2.0 * x) | |
| return x | |
| print(sqrt(2.0, 2.0, 0.0001)) |
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