Find the Taylor's series expansion upto terms of third degree for f(x,y) = tan point (3,1). 6. If f(x,y) and (x, y) are homogeneous functions of x, y of degree 6 and 4, respectively and u(x, y) = f(x,y) + (x,y), then show that f(x, y) = (x2 + 2xy + y²²) - (x + y). 11 2²u # 2: (about the 2 î