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Commutative Law of Binary Operation

Consider f:...

Question

Consider $f : N \to N, g : N \to N$ defined as $f (x) = 2 x, g (x) = 3 x + 4$ find $f o g (x)$

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Solution

$f (x) = 2 x g (x) = 3 x + 4 f o g (x) f (g (x)) f (3 x + 4) 2 (3 x + 4) 6 x + 8$

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