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11 votes
A) If f(x) = 3x - 2, find f^-1(x)
b) Find f^-1(13)

1 Answer

4 votes
a) f^-1(x) = (x/3) + (2/3) => inverse of f(x)
b) (13/3) + (2/3) = 15/3 => 5
Substitute 13 to x
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