Here is my problem:

Find the inverse F^-1 of f(x)=x-4/1+3x

They give me a hint and the hint is *use the two step method. I am not sure where to start even.

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- September 2nd 2012, 02:04 PMvyseroHelp with inverse functions
Here is my problem:

Find the inverse F^-1 of f(x)=x-4/1+3x

They give me a hint and the hint is *use the two step method. I am not sure where to start even. - September 2nd 2012, 02:33 PMPlatoRe: Help with inverse functions
- September 2nd 2012, 03:21 PMHallsofIvyRe: Help with inverse functions
Any function can be thought of as a set of ordered pairs: {(x, y)}. The corresponding

**inverse function**, if there is one, is the set {(y, x)}. That's why Plato swapped x and y in the given formula, Technically, once you have done that, you have the inverse function. But in order to show that this**is**a "function", you need to solve for y.

(If I were doing a problem that has, as a hint, "use the two step method", I would start by leafing back through the previous chapters to find out what the "two step method"**was**.)