Let \( \mathrm{A}=\{1,2\}, \mathrm{B}=\{3,6\} \), function \( f: \mathrm{A} \rightarrow \mathrm{...

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Let \( \mathrm{A}=\{1,2\}, \mathrm{B}=\{3,6\} \), function \( f: \mathrm{A} \rightarrow \mathrm{B} \) be defined by \( f(x)=3 x \) and function \( g: \mathrm{A} \rightarrow \mathrm{B} \) be defined by \( g(x)=x^{2}+2 \). Show that \( f=g \)
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