Multivariable functions

A multivariable function assigns an output to a tuple of inputs in its domain.

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Directional derivatives
A directional derivative measures the local rate of change along a specified direction.
Double and triple integrals
Integration over planar or spatial regions accumulates density into total quantities.
Line integrals
A line integral accumulates a scalar density or vector-field work along a curve.
Partial derivatives
A partial derivative varies one coordinate while holding the others fixed.
Antiderivatives
An antiderivative has the given function as its derivative; on an interval, any two antiderivatives differ by a constant.