solve with step by step

WhatsApp X VA Topic 4 - HW 3: (Differentials) - N X * Homework Help - Q&A from Onl X + X > C A webassign.net/web/Student/Assignment-Responses/last?dep=24613322 9. [-/1 Points] DETAILS SESSCALCET2 11.4.509.XP. MY NOTES ASK YOUR TEACHER Find the differential of the function. V = 4y cos(xy) dv = dx + dy 10. [-/1 Points] DETAILS SESSCALCET2 11.4.510.XP. MY NOTES ASK YOUR TEACHER Find the differential of the function. W = 6xyexz dw = dx + dy + dz 11. [-/1 Points] DETAILS SESSCALCET2 11.4.511.XP. MY NOTES ASK YOUR TEACHER The dimensions of a closed rectangular box are measured as 76 cm, 53 cm, and 11 cm, respectively, with a possible error of 0.2 cm in each dimension. Use differentials to estimate the maximum error in calculating the surface area of the box. (Round your answer to one decimal place.) cm 2 Topic 4 - HW 3: (Dif. 16:56 15/09/2020