Flyer0208 Flyer0208

15-03-2018
Mathematics

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What is the inverse of this function?
[tex]f(x) = \frac{2}{x + 4} [/tex]

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sqdancefan sqdancefan

15-03-2018

The usual way of finding inverse functions works. Swap x and "y" and solve for y.
.. x = 2/(y +4)
.. y +4 = 2/x . . . . . . multiply by (y+4)/x
.. y = (2/x) -4 . . . . . subtract 4
f⁻¹(x) = (2/x) -4

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