webassign.net/web/Student/Assignment-Responses/last?d Mi Gmail YouTube Maps 2. [-/1 Points] DETAILS LARCALC11 13.3.016. Find both first partial derivatives. z = 12y V x Oz Ox Oz ay Need Help? Read It Submit Answer 3. [-/1 Points] DETAILS LARCALC11 13.3.021. Find both first partial derivatives. z = In( 1 Oz Oz ay 85.F Q Search Smoke4. [-/1 Points] DETAILS LARCALC11 13.3.043. Use the limit definition of partial derivatives to find f (x, y) and f,(x, y). f ( x, y ) = Vx+y of x of ay Need Help? Read It Watch It Submit Answer 5. [-/1 Points] DETAILS LARCALC11 13.3.056. Find the slope of the surface in the x and y-directions at the given point. h (x, y) = x2 - yz (-1, 2, -3) slope in x-direction slope in y-direction 8 Need Help? Read It6. [-/1 Points] DETAILS LARCALC11 13.3.060.MI. Find the first partial derivatives with respect to x, y, and z. 9Xz W = X +y aw ax ow ay az Need Help? Read It Master It Submit Answer 7. [-/1 Points] DETAILS LARCALC11 13.3.066. Find f , f , and f, and evaluate each at the given point. f ( x , y, z ) = - xy (8, 1, -1) x + y + z fx ( x, y, z) = fy ( x, y, z) = fz ( x, y, z ) = fx (8, 1, -1) = f, (8, 1, -1) = fz(8, 1, -1) =Submit Answer 8. [-/1 Points] DETAILS LARCALC11 13.3.074.MI. Find all values of x and y such that f (x, y) = 0 and fy(x, y) = 0 simultaneously. f ( x, y) = 4x3 - 8xy + y3 ( x, y ) = ( ) (smaller x-value) ( x , y ) = ( ) (larger x-value) Need Help? Read It Master It Submit Answer 9. [-/1 Points] DETAILS LARCALC11 13.3.079. Find the four second partial derivatives. Observe that the second mixed partials are equal. z= x4 - 6xy+ 9y3 2x 2 axay ay2 ayax Need Help? Read It