What is the Inverse Function of g(x)?

So: -4 --> -6 -2 --> -5 0 --> 0 2 --> 6 4 --> -2 6 --> 2In summary, g^{-1}(x) is the inverse function of g(x) which assigns the values of x to their corresponding y values in the original function. The completed table of values for g^{-1}(x) is as follows: x -6 -4 -2 0 2 4 6 g^{-1}(x) -4 -6 -5 0 6 -2 2
  • #1
andydan1056
7
0
Consider the function g(x) represented by the table below:
x -6 -4 -2 0 2 4 6
g(x) -4 -2 4 0 6 -6 2

Complete the table of values for the INVERSE, g^{-1}(x), in the table below:
x -6 -4 -2 0 2 4 6
g^{-1}(x)
 
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  • #2
andydan1056 said:
Consider the function g(x) represented by the table below:
x -6 -4 -2 0 2 4, 6
g(x) -4 -2 4 0 6 -6 2

Complete the table of values for the INVERSE, g^{-1}(x), in the table below:
x -6 -4 -2 0 2 4 6
g^{-1}(x)


Think of of the definition of the inverse function. If g assigns the value y to x, then g-1 assigns x to y. g-1g(x)=x.

If g(x) = -6 , x was equal to 4. So g-1(-6)=g-1(g(4))=4

Can you continue?
 
  • #3
Another way of thinking about it: g is defined by
-6 --> -4
-5 --> -2
-2 --> 4
0 --> 0
2 --> 6
4 --> -6
6 --> 2

The inverse function, g-1, by definition, reverses that.
 
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Related to What is the Inverse Function of g(x)?

1. What is an inverse function?

An inverse function is a mathematical operation that undoes another function. In other words, if you apply a function and then apply its inverse, you will end up with the original input value.

2. How do I find the inverse of a function?

To find the inverse of a function, you can follow these steps:
1. Rewrite the function with "y" as the output variable.
2. Swap the positions of "x" and "y" in the function.
3. Solve the new equation for "y" in terms of "x".
4. Replace "y" with "f^-1(x)" to represent the inverse function.

3. What is the notation for inverse functions?

The notation for inverse functions is "f^-1(x)", where "f" is the original function and "-1" represents the inverse operation.

4. Can all functions have an inverse?

No, not all functions have an inverse. For a function to have an inverse, it must be one-to-one, meaning that each input has only one corresponding output. If a function has multiple outputs for the same input, it does not have an inverse.

5. How do I know if I have correctly found the inverse of a function?

To check if you have correctly found the inverse of a function, you can use the composition property:
f(f^-1(x)) = x and f^-1(f(x)) = x.
This means that when you plug in the inverse function as an input for the original function, you should get the input value back. Similarly, when you plug in the original function as an input for the inverse function, you should also get the input value back.

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