Math

QuestionFind the inverse function f1f^{-1} for f(x)=x23+8f(x)=\sqrt[3]{x-2}+8.

Studdy Solution

STEP 1

Assumptions1. The function is f(x)=x3+8f(x)=\sqrt[3]{x-}+8 . We are asked to find the inverse of this function, denoted as f1(x)f^{-1}(x)

STEP 2

To find the inverse of a function, we first replace f(x)f(x) with yy.
y=x2+8y = \sqrt[]{x-2}+8

STEP 3

Next, we swap xx and yy to find the inverse.
x=y23+8x = \sqrt[3]{y-2}+8

STEP 4

Now, we need to solve this equation for yy to find f1(x)f^{-1}(x).
First, isolate the cube root term by subtracting8 from both sides.
x8=y23x -8 = \sqrt[3]{y-2}

STEP 5

Next, we eliminate the cube root by cubing both sides of the equation.
(x8)3=(y2)(x -8)^3 = (y-2)

STEP 6

Finally, we solve for yy by adding2 to both sides of the equation.
(x8)3+2=y(x -8)^3 +2 = ySo, the inverse of the function f(x)f(x) is f1(x)=(x8)3+2f^{-1}(x) = (x -8)^3 +2.

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