# Write the equation of the inverse function...

• December 17th 2009, 06:25 AM
KarlosK
Write the equation of the inverse function...
I have a problem that says write the equation of the inverse of the given function. Then find the listed value.

I attached a copy of the problem because I don't know how to type it. Thanks!
• December 17th 2009, 06:55 AM
dedust
solve $x = (-8 - 8y)^{1/4}$ for $y$, you'll get
$y = h^{-1}(x) = . . .$,
then $h^{-1}(-1) =$
• December 17th 2009, 07:46 AM
JSB1917
In order to get inverse functions you can solve for x in the original equation and then switch x and y, or first switch x and y and then solve.

This is the original equation...

$y = \sqrt[4]{-8-8x}$ and $x\leq -1$