----------------
&nbsp;&nbsp;&nbsp;asks&nbsp;for&nbsp;a&nbsp;function
&nbsp;&nbsp;&nbsp;---------------------------------------------------------------------------&nbsp;*/
&nbsp;&nbsp;&nbsp;f:read("enter&nbsp;f(x,y)"),
/*&nbsp;---------------------------------------------------------------------------
&nbsp;&nbsp;&nbsp;echoes&nbsp;it,&nbsp;to&nbsp;make&nbsp;sure
&nbsp;&nbsp;&nbsp;---------------------------------------------------------------------------&nbsp;*/
&nbsp;&nbsp;&nbsp;print("f&nbsp;=&nbsp;",f),
