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gradient operator


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The operator

∇ = i∂/∂x + j ∂/∂y + k ∂/∂z,

where i, j, and k are unit vectors in the x, y, and z directions. Given a scalar function f and a unit vector n, the scalar product n.∇f is the rate of change of f in the direction of n. See also curl; divergence.

Subjects: Physics.


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