What is a square root?
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The square root of a number is a value that, when multiplied by itself, gives the original number. For example, the square root of 9 is 3 because 3 × 3 = 9. In mathematical notation, this is written as �? = 3.
Why is it called "Racine Carrée"?
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"Racine Carrée" is the French term for "square root". The calculator is named this way to accommodate users who search for the term in French or are learning about square roots in a French context.
What is the Newton-Raphson method?
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The Newton-Raphson method is an iterative numerical technique used to find approximations to the roots of a function. For finding square roots, it works by making successive approximations that get closer and closer to the actual square root value.
Can I calculate square roots of negative numbers?
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In the real number system, square roots of negative numbers are not defined. However, in complex mathematics, the square root of a negative number results in an imaginary number. Our calculator currently supports only non-negative real numbers.
How precise are the results?
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You can adjust the precision from 1 to 15 decimal places using the slider. JavaScript's Math.sqrt() function is generally accurate up to about 15-17 significant digits, which is more than sufficient for most practical applications.