Question:medium
If $f(x) = \frac{x+2}{3x-1}$, then $f(f(x))$ is:
If $f(x) = \frac{x+2}{3x-1}$, then $f(f(x))$ is:
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If \( f(f(x)) = x \), then the function is its own inverse. This often happens with linear fractional transformations where the sum of the main diagonal elements (in this case $1$ and $-1$) is zero.
Updated On: May 6, 2026
- \( x \)
- \( -x \)
- \( \frac{1}{x} \)
- \( -\frac{1}{x} \)
- \( 0 \)
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The Correct Option is A
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