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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