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Question
The inverse of f(x) =2x-1 is
(x-1)/2
(x+1)/2
2x-1
2x-1
ANSWER : 2
Descrption
<p><strong>Caution: Inverse function (not inverse only)</strong><br>Formula for inverse function:<br>1. y = f(x) <br>=> x => f^-1(y)<br>2. find x = something</p><p>Lets start:<br>y = f(x) = 2x-1<br>=> 2x = y+1<br>=> x = (y+1) / 2<br>=> f^-1(y) = (y+1) / 2<br>=> f^-1(x) = (x+1) / 2</p>
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