Thegallegos25 Thegallegos25

24-09-2020
Mathematics

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Find the inverse.
f(x) = 3x+28

Find the inverse fx 3x28 class=

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cromulent cromulent

24-09-2020

Set [tex]y = f^{-1}(x)[/tex] and [tex]f(y) = x[/tex]

Interchange the variables [tex]x[/tex] and [tex]y[/tex]

[tex]3y + 28 = x\\3y = x - 28\\y = \frac{x - 28}{3} \\\\f^{-1}(x) = \frac{x - 28}{3}[/tex]

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