f(x, y) = sin(x) + cos(y) + xy2; x = cos(t); y = sin(t) Find df dt at – McqOptions

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1.	f(x, y) = sin(x) + cos(y) + xy²; x = cos(t); y = sin(t) Find ^df _dt at t = ₂
A.	2
B.	-2
C.	1
D.	0
Answer» C. 1

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