List the critical points of the function f(x, y) = (x − 1)³(y + 2)² for which the Second Partial Derivative Test fails. O Test fails at (-1, a) and (b. 2). O Test fails only at (1.-2). Test fails at (1, a) and (b, 2). O Test fails at (1, a) and (b, -2). O Test fails only at (1, 2).

Q: 11) 60

A: Here I am attaching image so that you understand each and every step.

Q: 10) 21 68

A: We know that tan θ=Opposite sideAdjacent sidetan(68)=x21

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Q: 9) 60

A: The figure is

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Q: 8) 16 15

A: Answer is below

Q: 57-24

A: Given that: 57-24

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A:

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Q: 5) 45 6. y

A: We have to find x and y

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Q: 7) 16 63

A: