af 1) Given f(x, y) = x', which of the following is the mixed second order partial 7 @yax derivative of ? J-1 (a) (1+ylnx) '(b) yx' + x' (c) y(y-1)x2 (d) yx' (e) x+xln x [10 Marks] 2) What is the area of the region on the xy-plane which is bounded from above by the curve y = e', from below by y=cosx and on the right by the vertical line X=? (a) 2 cos(e' -5) (d) 22.14 (b) 14.80 (e) 31.31 (c) 2/3 [10 Marks]