f(x, y) = sin(x).cos(y) Which of the following is a critical point? – McqOptions

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1.	f(x, y) = sin(x).cos(y) Which of the following is a critical point?
A.	(<sup> </sup> <sub>4</sub>, <sup> </sup> <sub>4</sub>)
B.	(- <sup> </sup> <sub>4</sub>, <sup> </sup> <sub>4</sub>)
C.	(0, <sup> </sup> <sub>2</sub>)
D.	(0, 0)
Answer» D. (0, 0)

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