Time remaining:
4/(x+2), f^(-1)(x)=?

label Calculus
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schedule 1 Day
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Apr 21st, 2015

To find the inverse of a function, switch the variables and solve for y.

Remember that when something says f(x) you can replace it with y.

This is the equation to solve for the inverse

x = 4 / (y + 2)

x(y + 2) = 4

y + 2 = 4 / x

y = 4 / x - 2

Make common denominators

y = 4 / x - 2x / x

y = 4 - 2x / x

y = 2(2 - x) / x

Option (B)

Apr 20th, 2015

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Apr 21st, 2015
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