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(1 pt) Calculate all four second-order partial derivatives and confirm that the mixed partials are equal.
f(x,y) = x2 + 4xy + y2
of
=
(2x)
32f
(b)
=
(ay)
(c)
=
af
дудх
32f
(d)
=
(1 pt) Calculate all four second-order partial derivatives and confirm that the mixed partials are equal.
f(x, y) = x3 + 4xy + y2
2f
(a)
=
(2x)
af
(b)
11
(Oy)
(c)
=
of
дудх
32f
дхду
(d)
=
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