Q44Multiple correct2 Marks28 Apr 2024Let f(x, y) = 2x^4 - 8*sqrt(y) - 7. Choose the correct options from the following:Af is increasing at the point (1,4)(1, 4)(1,4), if y is fixed and x is varied.Bf is decreasing at the point (1,4)(1, 4)(1,4), if y is fixed and x is varied.Cf is decreasing at the point (1,4)(1, 4)(1,4), if x is fixed and y is varied.DNone of these
