If - f-x- - kxx-1- where - x - -1 -160- and - f -f-x- - x- for - x - 1- then find the value of - k-

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If f(x) ...

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If $f (x) = \frac{k x}{x + 1}$ where $x \neq - 1$ and $f {f (x)} = x$ for $x \neq 1$ then find the value of $k$ .

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f (x) = \frac{α x}{x + 1}, x \neq - 1

Let $f (x) = \frac{α x}{x + 1}, x \neq - 1$ . Then write the value of $α$ satisfying $f (f (x)) = x$ for all $x \neq - 1$ .

f (x) = \frac{kx}{x + 1}, x \neq - 1 .

f (f (x)) = x

x

\neq

$- 1$ , then the value of $k$ is

If f (x) = \frac{x - 1}{x + 1}, then find f(f(x)).

f (x) = \frac{K x}{x + 1} (x \neq - 1)

K

(f o f) (x) = x

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