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Find (fof) (x) if (i) fx = x/√1+x^2 (ii) f (x) = 2x+1/3x-2

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Find (fof) (x) if

(i) f(x) = \(\frac {x}{\sqrt{1+x^2}}\)

fx = x/√1+x2

(ii) f(x) = \(\frac {2x+1}{3x-2}\)

f (x) = 2x+1/3x-2

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Best answer

(i) f(x) = \(\frac {x}{\sqrt{1+x^2}}\)

(ii) f(x) = \(\frac {2x+1}{3x-2}\)

= x

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