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  1. What is $\sqrt {i}$? - Mathematics Stack Exchange

    May 12, 2015 · The square root of i is (1 + i)/sqrt (2). [Try it out my multiplying it by itself.] It has no special notation beyond other complex numbers; in my discipline, at least, it comes up about …

  2. What exactly IS a square root? - Mathematics Stack Exchange

    May 12, 2015 · It's come to my attention that I don't actually understand what a square root really is (the operation). The only way I know of to take square roots (or nth root, for that matter) it to …

  3. What does the small number on top of the square root symbol …

    What does the small number on top of the square root symbol mean? Ask Question Asked 12 years, 2 months ago Modified 5 years, 1 month ago

  4. Is the square root of a negative number defined?

    Apr 13, 2014 · This approach is not without fault either, since you're now no longer talking strictly about the square root of a complex number. The points on the Riemann surface tell you which …

  5. Derivative of square root - Mathematics Stack Exchange

    What would be the derivative of square roots? For example if I have $2 \\sqrt{x}$ or $\\sqrt{x}$. I'm unsure how to find the derivative of these and include them especially in something like implicit.

  6. Approximating square roots using binomial expansion.

    Approximating square roots using binomial expansion. Ask Question Asked 8 years, 9 months ago Modified 1 year, 3 months ago

  7. Can the square root of a real number be negative? [duplicate]

    May 27, 2014 · Although yes, the square of any positive real is equal to the square of the corresponding negative, the square root function cannot be well-defined if it generates both a …

  8. radicals - How do I get the square root of a complex number ...

    Jun 9, 2011 · The square root is not a well defined function on complex numbers. Because of the fundamental theorem of algebra, you will always have two different square roots for a given …

  9. Why is the square root of a negative number impossible?

    Feb 8, 2020 · It is impossible to find the square root of negative one, or the square root of any negative number, because no number times itself can equal a negative number.

  10. Why can't you square both sides of an equation?

    Nov 17, 2013 · A slightly higher-level way to phrase the issue is that the usual square root is not a "function" at all. "Doing the same thing" to both sides only preserves equality if "doing the …