Hi guys!
Any help with the above problem would be really greatly appreciated.
Many thanks in advance,
TheMathsDude
Here is an example for part c.
$\displaystyle f = \left\{ {\left( {a,1} \right),\left( {b,1} \right),\left( {c,2} \right),\left( {d,2} \right)} \right\},\,A = \{ a,c\} \,\& \,B = \{ b,d\} $
$\displaystyle f\left( A \right)\backslash f\left( B \right) = \emptyset \,\& \,f\left( {A\backslash B} \right) = \left\{ {1,2} \right\}
$