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If the range is the real numbers, it has a lower bound (zero) but no upper bound.

Q: Is the standard square root function bounded?

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The opposite (or inverse function) of the square root would be the square.

yes

Yes, if your equation is f(x) = sqrt5(x). The square root is also a function itself, if that's what you mean.

Let's illustrate with an example. The square function takes a number as its input, and returns the square of a number. The opposite (inverse) function is the square root (input: any non-negative number; output: the square root). For example, the square of 3 is 9; the square root of 9 is 3. The idea, then, is that if you apply first a function, then its inverse, you get the original number back.

Standard deviation = square root of variance.

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The opposite (or inverse function) of the square root would be the square.

The standard deviation of a normal deviation is the square root of the mean, also the square root of the variance.

It is the "square root." This is the opposite function (n1/2) of the square (n2).

yes

The standard form of a complex number is a+bi. So the standard form of the negative square root of 5i is 0-√(5i).

The square of the standard deviation is called the variance. That is because the standard deviation is defined as the square root of the variance.

x

Yes, if your equation is f(x) = sqrt5(x). The square root is also a function itself, if that's what you mean.

Standard deviation is the square root of the variance.

Let's illustrate with an example. The square function takes a number as its input, and returns the square of a number. The opposite (inverse) function is the square root (input: any non-negative number; output: the square root). For example, the square of 3 is 9; the square root of 9 is 3. The idea, then, is that if you apply first a function, then its inverse, you get the original number back.

Standard deviation = square root of variance.

This is typically done by importing math.h, and calling the sqrt function.