Please write a function that accepts a floating number and returns its square-root. You may not use built-in square root function from your language. However, basic operators like addition, subtraction, multiplication are allowed. Please take into consideration the floating precision.

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dopey · Accepted Answer

Newton's method: http://en.wikipedia.org/wiki/Newton's_method

rachicks · Answer

http://www.dreamincode.net/code/snippet244.htm

Anónimo · Answer

Hint: please really take into consideration the floating point.

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