C 2 97 95 92 c 6 96 95 93 90 86 80 c 15 96 93 82 70

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c=21009998979592c=6969593908680c=15969382705836(a)Estimateft(22,6):(1 pt) Find the partial derivative indicated. Assume thevariables are restricted to a domain on which the function is de-fined.z=5x2y3-y316xy-9.Correct Answers:6.(1 pt) The figure below shows contours off(x,y), withvalues offon the contours omitted.Iffx(P)is negative, answer the following questions about theother derivatives offatPandQ.(a)What is the sign offy(P)??(b)What is the sign offx(Q)??(c)What is the sign offy(Q)??7.(1 pt) Find the partial derivatives indicated. Assume thevariables are restricted to a domain on which the function is de-fined.8.(1 pt) Find the partial derivatives indicated. Assume thevariables are restricted to a domain on which the function is de-fined.z=(x3+x-y)6.zx=zy=Correct Answers:9.(1 pt) Find the partial derivative indicated. Assume thevariables are restricted to a domain on which the function is de-fined.z=5x2y3-y316xy-9.

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