For a function to have an inverse, the relationship must be that there is a 1-to-1 relationship between its input values and its output values. A quadratic equation doesn't have an inverse because 2 inputs …

Learn what the inverse of a function is, and how to evaluate inverses of functions that are given in tables or graphs.

The definition of an inverse function is a function that undoes the action of another function (or reverses the action of another function). So yes, it is when the domain and range values are swapped.

Not all functions have inverses. Those who do are called "invertible." Learn how we can tell whether a function is invertible or not. Inverse functions, in the most general sense, are functions that "reverse" …

In the first inverse function video, I talked about how a function and their inverse-- they are the reflection over the line y equals x. So where's the line y equals x here?

Sal explains that if f (a)=b, then f ⁻¹ (b)=a, or in other words, the inverse function of f outputs a when its input is b.

The inverse trigonometric functions We already know about inverse operations. For example, addition and subtraction are inverse operations, and multiplication and division are inverse operations. Each …

We can compose functions by making the output of one function the input of another one. This simple-yet-rich idea opens up a world of fascinating applications. Inverse functions undo each other when …

Learn how to find the inverse of a function and how to graph it in this video. The inverse function swaps the x and y values of the original function, and the graph of this inverse function is a reflection of the …

Now the first thing you might ask is let's say that I have a function f, and there does exist a function f inverse that satisfies these two requirements. So f is invertible.