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21 votes
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Find the inverse of the function on the given domain.

Find the inverse of the function on the given domain.-example-1
User AndreasInfo
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2 Answers

10 votes
10 votes

Final answer:

To find the inverse of a function, switch the roles of x and y, solve for y, and express the inverse function explicitly.

Step-by-step explanation:

To find the inverse of a function, we switch the roles of x and y in the original function and then solve for y. Let's say the original function is y = f(x). To find the inverse, we write it as x = f^-1(y). Next, we solve for y and express the inverse function explicitly. The domain of the inverse function is the same as the range of the original function.

User Bramvdk
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18 votes
18 votes

Given:

There are given that the function:


f(x)=(x-19)^2

Step-by-step explanation:

According to the question:

We need to find the inverse of the function.

Then,

To find the inverse, first exchange f(x) into y:

So,


\begin{gathered} f(x)=(x-19)^(2) \\ y=(x-19)^2...(1) \end{gathered}

Then,

We need to exchange x into y:

So,


\begin{gathered} y=(x-19)^2 \\ x=(y-19)^2...(2) \end{gathered}

Then,

We need findthe value for y:


\begin{gathered} \begin{equation*} x=(y-19)^2 \end{equation*} \\ \pm√(x)=y-19 \\ y=\pm√(x)+19 \\ y=√(x)+19,-√(x)+19 \end{gathered}

Then,


f^(-1)(x)=√(x)+19,-√(x)+19

Final answer:

Hence, the inverse of the given function is show below:


f^(-1)(x)=√(x)+19

User Vikingosegundo
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3.2k points