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The opposite (or inverse function) of the square root would be the square.
It is the "square root." This is the opposite function (n1/2) of the square (n2).
yes
Yes, if your equation is f(x) = sqrt5(x). The square root is also a function itself, if that's what you mean.
No. Square root is not a proper function in the sense that, over the domain of negative and positive numbers, it is a one-to-many mapping. Strictly speaking the domain for square root is all non-negative or all non-positive numbers (or a subset of them). Consider the following mapping: Your mother is your parent, your father is your parent. But your mother is not your father.
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.
This is typically done by importing math.h, and calling the sqrt function.
Math.sqrt(number) function is used to find the square root of a number.. try it
The square root operation is not a function because for each value of y there can be 2 values of x - the principal square root and its negative. This can only be rectified by limiting the range of the opearation to the principal or positive square root. Furthermore, it also depends on the domain of the function. If y<4 then the square root is not defined within Real numbers. So, for y ≥ 4, x = +sqrt(y-4) is a function.
square root of the argument
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