<p><img alt="2. Consider the function f (x,y) (0,0), 0 f (.y) (0,0). (a) Investigate the differentiability of f (b) Does f belong to C function?" src="https://media.cheggcdn.com/media%2F8bc%2F8bc246e4-cf54-41f7-9840-89b28fc3635d%2FphpsfMZF2.png" style="height:181px;width:554px;" aria-describedby="d3f"/></p>2. Consider the