Hello,

I need help with these questions below, I am not sure if I am doing right.

Instructions: Answer ALL questions. 1. Given f(x, y) = x5y2 - 3xy - 3xBy + y2, find all the first and second order partial derivatives: i ) fx ii ) fy iii ) fox iv ) fry v) fyr vi) fyy [25marks] 2. Find the determinant of each of the following matrices: 3 ( a) 2 - 6 ( b ) - 2 5 (c) Which of the matrices above are invertible? For those that are invertible, find the inverse matrix. [25 marks]