# Calculators - Calculus III

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## Partial Derivative Calculator

This online calculator will calculate the partial derivative of the function, with steps shown. You can specify any order of integration.

## Tangent Plane Calculator

The calculator will try to find the tangent plane to the explicit and the implicit curve at the given point, with steps shown.

## Critical Points, Extrema, and Saddle Points Calculator

The calculator will try to find the critical (stationary) points, the relative (local) maxima and minima, as well as the saddle points of the multivariable function, with steps shown.

## Lagrange Multipliers Calculator

The calculator will try to find the maxima and minima of the two- or three-variable function, subject to the given constraints, using the method of Lagrange multipliers, with steps shown.

## Jacobian Calculator

The calculator will find the Jacobian matrix of the set of functions and the Jacobian determinant (if possible), with steps shown.

## Divergence Calculator

The calculator will find the divergence of the given vector field, with steps shown.

## Gradient of a Function Calculator

The calculator will find the gradient of the given function (at the given point if needed), with steps shown.

## Directional Derivative Calculator

The calculator will find the directional derivative (with steps shown) of the given function at the point in the direction of the given vector.

## Curvature Calculator

The calculator will find the curvature of the given explicit, parametric, or vector function at a specific point, with steps shown.

## Unit Tangent Vector Calculator

The calculator will find the unit tangent vector of the vector-valued function at the given point, with steps shown.

## Unit Normal Vector Calculator

The calculator will find the principal unit normal vector of the vector-valued function at the given point, with steps shown.

## Multiple (Double, Triple) Integral Calculator

The calculator will try to calculate the multiple integral (double, triple).

## 3D Function Grapher

A free online 3D graphing calculator for plotting linear, quadratic, cubic, quartic, polynomial, trigonometric, hyperbolic, exponential, and logarithmic curves. The plots can be styled and customized according to the needs.

To plot a 2d graph, use the 2d grapher.