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The electric Potential at a point P (x, y, z) is given by `V = –x^2y – xz^3 + 4` The electric field `vecE` at that point is

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The electric Potential at a point P (x, y, z) is given by `V = –x^2y – xz^3 + 4` The electric field `vecE` at that point is ..........
Options:
(a) `hati(2xy+z^3)+hatjx^2+hatk3xz^2` (b) `hati2xy+hatj(x^2+y^2)+hatk(3xy-y^2)` (c) `hatiz^3+hatjxyz+hatkz^2` (d) `hati(2xy-z^3)+hatjx^2+hatk3xz^2`

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