નીચે આપેલા ગણોના ઘટકો વચ્ચેનો સંબંધ વિધેય છે કે નહિ તે ચકાસો :
$(1)\ \mathrm{A}=\{1,2,3,4\}, \mathrm{B}=\{3,5,7,9\}$, સંબંધ $f(x)=2 x+1, x \in \mathrm{A}$
$(2)\ \mathrm{P}=\left\{-\frac{1}{2}, 0,1\right\}, \mathrm{S}=\{10\}$, નિયમ $k(x)=10, x \in \mathrm{P}$
$(3)\ \mathrm{A}=\{2,5,6\}, \mathrm{B}=\left\{1, \frac{3}{2}, \frac{9}{5}, \frac{11}{7}, \frac{13}{6}\right\}$, નિયમ $y=\frac{2 x-1}{x+1}, x \in \mathrm{A}$
$(4)\ \mathrm{B}=\{-1,0,1,3\}, \mathrm{C}=\{-5,-3,-1,1,3\}$, નિયમ $h(x)=2 x+3, x \in \mathrm{B}$
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