Inverse function - Math
https://www.math.net/inverse-functionInverse function. Inverse functions are a way to "undo" a function. In the original function, plugging in x gives back y, but in the inverse function, plugging in y (as the input) gives back x (as the output). If a function were to contain the point (3,5), its inverse would contain the point (5,3).If the original function is f(x), then its inverse f -1 (x) is not the same as .
Inverse function - Math
www.math.net › inverse-functionInverse functions are a way to "undo" a function. In the original function, plugging in x gives back y, but in the inverse function, plugging in y (as the input) gives back x (as the output). If a function were to contain the point (3,5), its inverse would contain the point (5,3). If the original function is f(x), then its inverse f -1 (x) is not the same as .
Inverse Functions - mathsisfun.com
www.mathsisfun.com › sets › function-inverseInverse Functions. An inverse function goes the other way! Let us start with an example: Here we have the function f(x) = 2x+3, written as a flow diagram: The Inverse Function goes the other way: So the inverse of: 2x+3 is: (y-3)/2 . The inverse is usually shown by putting a little "-1" after the function name, like this: f-1 (y) We say "f inverse of y"
Inverse function - Wikipedia
https://en.wikipedia.org/wiki/Inverse_functionThe function f: R → [0,∞) given by f(x) = x is not injective because for all . Therefore, f is not invertible. If the domain of the function is restricted to the nonnegative reals, that is, we take the function with the same rule as before, then the function is bijective and so, invertible. The inverse function here is called the (positive) square root function and is denoted by .