e det f(xiy)= (xy) = (90) show that flq) and fled existy, but flxy)is not differentiable at co,0) Q2 Find the gradant of the functions af the gisen point

Please solve question 3

Extracted text: e det f(xiy)= (xy) = (90) show that flq) and fled existy, but flxy)is not differentiable at co,0) Q2 Find the gradant of the functions af the gisen point <) fcxg)="y-x" at="" (q,1)="" b)="" fossla="" ln="" (xzay)="" at="" (a,="" 1)="" c)="" gaxiy)="K?_E" at="" (vz,a)="" $)="" fcry)="tan"(" at="" (fr-2)="" 23="" find="" the="" deichive="" of="" the="" funotion="" at="" po="" inthe="" direction="" fhhe="" vetor="" e="" :="" a)="" fcxg)="&ry" -3y"="" ,="" pa(5,5),="" 34+る5="" 6)="" g="" cxy)="X-y" i="" paca-^),子こ0-43.="" %3d="" xy="">