Introduction to Functions of Several Variables

Introduction to Functions of Two Variables with Applications
Introduction to Functions of Two Variables
Ex: Function Values of a Function of Two Variables Using a Table
Evaluate a Function of Two Variables (Constants)
Evaluate a Function of Two Variables (Variables)
Determine and Interpret Slopes of a Linear Multivariable Function
Application: Write a Linear Multivariable Function
Ex: Evaluate a Function of Two Variables (Cobb-Douglas Production Function)
Ex: Function Values of a Function of Two Variables (Square Root)
Ex: Function Values of a Function of Two Variables (Polynomial)
Ex: Function Values of a Function of Two Variables (Fraction)
Ex: Function Values of a Function of Two Variables (Exponential)
Ex 1: Determine the Domain of a Function of Two Variables
Ex 2: Determine the Domain of a Function of Two Variables
Level Curves of Function of Two Variables
Ex 1: Determine a Function Value Using a Contour Map
Ex 2: Determine a Function Value Using a Contour Map
Ex: Determine if a Function is Increasing or Decreasing in a Direction Using a Contour Map
Use Traces of a Surface to Select the Equation of the Surface (Ex1)
Use Traces of a Surface to Select the Equation of the Surface (Ex 2)
Determine the Traces of  Surface Given the Graph of the Surface
Describe Traces of Quadric Surfaces: y = 1 Trace of an Ellipsoid
Describe Traces of Quadric Surfaces: x = 1 Trace of an Ellipsoid
Describe Traces of Quadric Surfaces: x = 1 Trace of an Paraboloid
Graph a Function of Two Variable Using 3D Calc Plotter
Graph a Contour Plots (Level Curves) Using 3D Calc Plotter

Limits of Functions of Two Variables

Limits of Functions of Two Variables
Find the Limit of a Function of Two Variables: Direct Substitution
Find the Limit of a Function of Two Variables: Rationalize or Factor 1
Find the Limit of a Function of Two Variables: Rationalize or Factor 2
Find the Limit of a Function of Two Variables: Factor Difference of Squares
Find the Limit of a Function of Two Variables: Factor Difference of Cubes
Ex: Limit of a Function of Two Variables (Origin - DNE)
Ex: Limit of a Function of Two Variables (Origin - Exist)
Ex: Limit of a Function of Two Variables (Not Origin - Exist - Direct Substitution)
Ex: Limit of a Function of Two Variables (Not Origin - DNE)

Partial Derivatives of functions of Two or More Variables
First Order Partial Derivatives
Ex: Estimate the Value of a Partial Derivative Using a Contour Map
Ex: Estimate the Value of a Partial Derivative Using a Contour Map
Determining Basic Partial Derivatives: Functions of Two Variables
Determining Partial Derivatives: Functions of Two Variables
Determine Partial Derivatives Using the Chain Rule: Functions of Two Variables
Determining Partial Derivatives: Functions of Three Variables
Ex: Determine a Partial Derivative Function of an Exponential Function of Two Variables
Ex: Determine a Partial Derivative Function of an Polynomial Function of Two Variables
Ex: Find Partial Derivative Values for a Polynomial Function of Two Variables
Ex: Find Partial Derivative Values for a Square Root Function of Two Variables
Determine Partial Derivatives Using the Chain Rule: Square Root Function
Ex: Find the Partial Derivatives of the Cobb Douglas Production Function
Ex: Find the Partial Derivative of a Function of Three Variables (Square Root)
Ex: Application of First Order Partial Derivative (Change in Production)
Second Order Partial Derivatives
Find Second Order Partial Derivatives: f_xy and f_yy
Ex:  Find First and Second Order Partial Derivatives
Ex: Determine Second Order Partial Derivatives
Differentials of Functions of Two Variables
Find dz for a Function of Two Variables and Compare to Delta z
Find dz for a Function of Two Variables and Compare to Delta z
Find dz for a Function of Two Variables and Compare to Delta z
Applications of Differentials of Functions of Several Variables
Linear Approximation for a Function Value (Function of Two Variables)

The Chain Rule and Directional Derivatives, and the Gradient Functions of Two Variables

The Chain Rule for Functions of Two Variables With One Independent Variable
Use the Chain Rule to Find a Derivative of a Function of Two Variables and One Independent Variable (Basic)
Use the Chain Rule to Find a Derivative of a Function of Two Variables and One Independent Variable
Use the Chain Rule to Find a Derivative of a Function of Two Variables and Two Independent Variables
The Chain Rule for Functions of Two Variables With Two Independent Variable
Ex:  Chain Rule - Function of Two Variables with One Independent Variable
Ex:  Chain Rule - Function of Two Variables with Two  Independent Variable
Ex:  Chain Rule - Function of Two Variables with Three  Independent Variable
Application of Chain Rule  of a Function of Two Variables - Change of Volume
Implicit Differentiation of Functions in One Variable using Partial Derivatives
Perform Implicit Differentiation Using Partial Derivatives
Partial Implicit Differentiation
Find Partial Derivatives of an Implicit Equation Using  Partial Derivatives
Partial Derivatives of Implicit Equation Using Partial Derivatives
Directional Derivatives
Show Tangent Lines to a Surface  Using 3D Calc Plotter - Directional Derivative
The Gradient
Show the Gradient to a Surface Using 3D Calc Plotter
Ex: Find the Gradient of the Function f(x,y)=xy
Ex: Find the Gradient of the Function f(x,y)=e^(2x)sin(3y)
Ex: Find the Gradient of the Function f(x,y)=5xsin(xy)
Find the Gradient Vector Field of f(x,y)=x^3y^5
Find the Gradient Vector Field of f(x,y)=ln(2x+5y)
Ex: Use the Gradient to Find the Maximum Rate of Increase of f(x,y)=(4y^5)/x from a Point
Ex 1:  Find a Value of a Directional Derivative - f(x,y)=xy
Ex 2:  Find a Value of a Directional Derivative - f(x,y)=x^n*y^m
Ex 3:  Find a Value of a Directional Derivative - f(x,y)=ln(x^2+y^2)

Normal Vectors and Tangent Planes to Functions of Two Variables

The Equation of a Tangent Plane to a Surface (Relating to Tangent Line)
Derive or Prove the Equation of a Tangent Line to a Surface
Find the Equation of the Tangent Plane to a Surface - f(x,y)=-2x^2+4y^2-4y
Find the Equation of the Tangent Plane to a Surface - f(x,y)=2e^(x^2-2y)
Find the Equation of the Tangent Plane to a Surface - f(x,y)=2ycos(5x-3y)
Determining a Unit Normal Vector to a Surface
Verifying the Equation of a Tangent Plane to a Surface
Determining the Equation of a Tangent Plane
Ex 1:  Find the Equation of a Tangent Plane to a Surface
Ex 2:  Find the Equation of a Tangent Plane to a Surface (Exponential)
Ex 3:  Find the Equation of a Tangent Plane to a Surface (Trigonometric)
Find a Linear Approximation to a Function of Two Variables and Estimate a Function Value

Relative Extrema and Applications to Functions of Two Variables

Determine the Critical Points of a Function of Two Variables (Basic)
Find the Critical Point of a Function of Two Variables
Determine the Critical Points of a Function of Two Variables
Determining the Relative Extrema of a Function of Two Variables
Determine Relative Extrema of a Function of Two Variables:  Basic #1
Determine Relative Extrema of a Function of Two Variables:  Basic #2
Determine Relative Extrema of a Function of Two Variables
Find Relative Extrema and Saddle Point of a Function of Two Variables
Extrema of Functions of Two Variables (Unconstrained) f=x^4+16xy^2+2y^4
Extrema of Functions of Two Variables (Unconstrained) f=x^6+y^6+6/(xy)
Ex 1: Classify Critical Points as Extrema or Saddle Points - Function of Two Variables
Ex 2: Classify Critical Points as Extrema or Saddle Points - Function of Two Variables
Ex: Determine Relative Extrema for a Function of Two Variables
Absolute Extrema of Functions of Two Variables
Absolute Extrema of a Function of Two Variable Over Bounded Region (Basic)
Find the Absolute Extrema of a Function of Two Variable Over a Triangular Region
Absolute Extrema of a Function of Two Variable Over Bounded Region (Rectangle)
Absolute Extrema of a Function of Two Variable Over Bounded Region (Circle)
Applications of Extrema of Functions of Two Variables I
Applications of Extrema of Functions of Two Variables II
Applications of Extrema of Functions of Two Variables III
Ex: Determine the Quantity to Maximize Revenue -  Function of Two Variables
Ex: Minimize Cost to Make Open Top Box - Function of Two Variables
Application of Relative Extrema of a Function of Two Variables (Brand Loyalty)
Find the Minimum Distance Between a Cone and a Point

Lagrange Multipliers
Lagrange Multipliers - Part 1
Lagrange Multipliers - Part 2
Lagrange Multipliers: Maximized f=xy Under Constraint x+5y=64
Lagrange Multipliers: Relative Extrema of f=xy Under Constraint y=9-x^2
Lagrange Multipliers: Minimize f=x^2+y^2 under Constraint x+4y=20
Lagrange Multipliers: Abs Extrema of Paraboloid Under Circular Constraint
Absolute Extrema of a Function of Two Variable Over Bounded Region (Circle / Lagrange)
Maximize a Cobb Douglas Production Function Using Lagrange Multipliers
Maximize a Function of Two Variable Under a  Constraint Using Lagrange Multipliers - f(x,y)=x^2y
Lagrange Multipliers App: Maximize the Area of a Rectangle
Lagrange Multipliers App: Minimize the Cost of a Box
Minimize a Cost Function of Two Variable Under  a Constraint Using Lagrange Multipliers
Lagrange Multipliers: Find the Max and Min of a Function of Two Variables
Lagrange Multipliers: Find Minimum Cost using Cobb Douglas Production Function
Minimize the Total Energy Generated through a Circuit Using Lagrange Multipliers

Double Integrals

Approximate the Volume of Pool With The Midpoint Rule Using a Table of Values
Double Integral Approximation Using Midpoint Rule Using Level Curves
Ex: Double Integral Approximation Using Midpoint Rule - f(x,y)=ax+by
Integrating Functions of Two Variables
Introduction to Double Integrals and Volume
Double Integrals and Volume over a General Region - Part 1
Double Integrals and Volume over a General Region - Part 2
Evaluating Double Integrals
Ex: Double Integrals - Describe a Region of Integration (Triangle)
Ex: Double Integrals - Describe a Region of Integration (Quadratic)
Ex: Double Integrals - Describe a Region of Integration (Advanced)
Ex 1: Evaluate a Double Integral Over a Rectangular Region to Find a Volume - f(x,y)=c
Ex 2: Evaluate a Double Integral Over a Rectangular Region to Find a Volume - f(x,y)=c
Ex: Evaluate a Double Integral Over a Rectangular Region to Find a Volume - f(x,y)=ax
Ex: Evaluate a Double Integral Over a Rectangular Region  - f(x,y)=ax+by
Ex: Evaluate a Double Integral to Determine Volume (Basic)
Ex: Evaluate a Double Integral to Determine Volume - Change Order of Integration
Ex: Evaluate a Double Integral Over a Rectangular Region to Find a Volume - f(x,y)=x/y
Use a Double Integral to Find the Volume Under a Paraboloid Over a Rectangular Region
Find Volume Using a Double Integral Over Triangular Region (Basic)
Find Volume Using a Double Integral Over Triangular Region
Evaluate a Double Integral Using Substitution Over a Rectangular Region - f(x,y)=(xy^2)/(x^2+1)
Evaluate a Double Integral Using Substitution Over a Rectangular Region - f(x,y)=(ax+by)^n
Evaluate a Double Integral Using Substitution Over a Rectangular Region - f(x,y)=xysin(x^2+y^2)
Evaluate a Double Integral over a Trapezoidal Region Requiring Integration by Part
Evaluate a Double Integral Over a General Region - f(x,y)=ax+by
Evaluate a Double Integral Over a General Region - f(x,y)=xy^2
Evaluate a Double Integral Over a General Region with Substitution - f(x,y)=e^(x/y)
Evaluate Double Integral of y/(1+x) over Region Bounded by y=-x and y=sqrt(x)
Average Value of a Function of Two Variables
Fubini's Theorem
Setting up a Double Integral Using Both Orders of Integration
Double Integrals:  Changing the Order of Integration
Double Integrals: Changing the Order of Integration - Example 1
Double Integrals: Changing the Order of Integration - Example 2


Double Integrals in Polar Coordinates

Introduction to Double Integrals in Polar Coordinates
Write a Double Integral Using Polar Coordinates and Evaluate (1)
Write a Double Integral Using Polar Coordinates and Evaluate (2)
Double Integrals in Polar Coordinates - Example 1
Double Integrals in Polar Coordinates - Example 2
Area Using Double Integrals in Polar Coordinates - Example 1
Area Using Double Integrals in Polar Coordinates - Example 2
Double Integrals in Polar Form - Volume of a Right Circular Cylinder (f(x,y) over a circle)
Double Integrals in Polar Form - Volume of a Half Sphere Over a Circle
Evaluate a Double Integral in Polar Form - f(x,y)=ax+by Over a Half-Circle
Evaluate a Double Integral in Polar Form - f(x,y)=cos(x^2+y^2) Over a Ring
Volume of a Drilled Sphere Using a Double Integral in Polar Form
Double Integrals in Polar Form - Volume Bounded by Two Paraboloids

Applications of Double Integrals:  Mass, Center of Mass, Jacobian

Double Integral Application: Mass of a Triangular Region on the Coordinate Plane
Double Integral Application: Mass of a Circular Region (Polar Coordinates)
Double Integrals - Find the Mass of a Lamina Over a Region in the xy Plane
Double Integrals - Find the Center Mass of a Lamina Over a Region Using Polar Coordinates
Double Integral Application: Mass, Moments, Center of Mass of Triangular Region
Double Integrals - Find the Total Charge Over a Triangular Region
Double Integrals - Find a Probability Using the Exponential Density Function:  P(x<a,y<b)
Double Integrals - Surface Area over a Rectangular Region (Basic)
Double Integrals - Surface Area over a Circle Using Polar Coordinates (Basic)
Surface Area of a Cone Bounded by Two Planes Using a Double Integral (Polar)
Find the  Jacobian Given x=au+bv, y=u^2+cv
Determine a Jacobian (2 by 2)
Evaluate a  Double Integral of ax+by Over Parallelogram Given Transformation Equations (Jacobian)
Evaluate a  Double Integral of ax+by Over Parallelogram  (Jacobian)
Evaluate a Double Integral of x^2 Over an Ellipse Using a Change of Variables (Jacobian, Polar)

Triple Integrals

Introduction to Triple Integrals
Evaluating Triple Integrals – Example
Ex 1: Set Up and Evaluate a Triple Integral of z - Part 1: Limits of Integration
Ex 1: Set Up and Evaluate a Triple Integral of z - Part 2: Evaluate the Triple Integral
Ex 2: Set up and Evaluate a Triple Integral of 2xz
Ex 3: Set Up and Evaluate a Triple Integral of y - Part 1: Limits of Integration
Ex 3: Set Up and Evaluate a Triple Integral of y - Part 2: Evaluate the Triple Integral
Ex 4: Set up and Evaluate a Triple Integral of x+y-4z
Evaluate a Triple Integral Using a Change of Variables (Jacobian)
Triple Integrals and Volume - Part 1
Triple Integrals and Volume - Part 2
Triple Integrals and Volume - Part 3
Set up a Triple Integral to Determine Volume (Rectangular Coordinates)
Use a Triple Integral to Find the Volume of a Spherical Cap
Determine Limits of Integration for a Triple Integral - Region of Integration is a Tetrahedron
Use a Triple Integral to Determine Volume Ex 1 (Rectangular Coordinates)
Use a Triple Integral to Determine Volume Ex 2 (Rectangular Coordinates)
Triple Integrals:  Find the Volume of a Tetrahedron Given the Vertices
Application of Triple Integrals:  Mass
Changing the Order of Triple Integrals


Triple Integrals in Cylindrical and Spherical Coordinates

Write a Cylindrical Equations in Rectangular Form
Write a Rectangular Equations in Cylindrical Form
Write Spherical Equations in Rectangular Form
Convert a Spherical Equation to a Rectangular Equation rho=2csc(phi)
Convert a Spherical Equation to a Rectangular Equation phi=pi/6
Convert a Rectangular Equation to a Spherical Equation x^2+y^2+z^2-9z=0
Convert a Rectangular Equation to a Spherical Equation x^2+y^2-z^2=0
Triple Integrals Using Cylindrical Coordinates
Triple Integral and Volume Using Cylindrical Coordinates
Rewrite Triple Integrals Using Cylindrical Coordinates
Use a Triple Integral to Determine Volume Ex 1 (Cylindrical Coordinates)
Use a Triple Integral to Find the Volume Bounded by Two Paraboloid (Cylindrical)
Introduction to Triple Integrals Using Spherical Coordinates
Triple Integrals and Volume using Spherical Coordinates
Evaluate a Triple Integral Using Cylindrical Coordinates - Triple Integral of e^z
Evaluate a Triple Integral Using Spherical Coordinates - Triple Integral of 1/(x^2+y^2+z^2)
Find the Moment of Inertia about the z-axis of a Solid Using Triple Integrals
Find the Center of Mass of a Solid Using Triple Integrals
Use a Triple Integral to Determine the Mass Bounded by Two Paraboloids (Cyl)
Use a Triple Integral to Determine the Mass of an Cone Cut From Sphere (Spherical)
A Change of Variables for a Double Integral:  Jacobian
Example of a Change of Variables for a Double Integral:  Jacobian
A Change of Variables for a Triple Integral:  Jacobian

 

 

 

 

 

Vector Fields, Divergence, and Curl

Introduction to Vector Fields
Graph 2D Vector Fields Using CalcPlot3D
The Divergence of a Vector Field
Determine the Divergence of a 2D Vector Field (Basic) Determine the Divergence of a 2D Vector Field (Trig)
Ex 1: Determine the Divergence of a Vector Field
Ex 2: Determine the Divergence of a Vector Field
Ex: Determine the Sign of the Divergence from the Graph of a Vector Field
The Curl of a Vector Field
Ex 1: Determine the Curl of a Vector Field
Ex 2: Determine the Curl of a Vector Field
Ex 1: Determine the Curl of a Vector Field (2D)
Ex 2: Determine the Curl of a Vector Field (2D)
Conservative Vector Fields

Line Integrals

Defining a Smooth Parameterization of a Path
Ex 1A: Determine a Piecewise Smooth Parameterization for a Curve (Triangle)
Ex 1B: Determine a Piecewise Smooth Parameterization for a Curve (Triangle)
Ex 2: Determine a Piecewise Smooth Parameterization for a Curve
Ex: Determine Parametric Equations for an Ellipse
Line Integrals in R^2
Line Integrals in R^3
Line Integral of Vector Fields
Line Integrals in Differential Form
Evaluate a Line Integral of y with Respect to Arc Length (Area)
Evaluate a Line Integral of xy^2  with Respect to Arc Length C: Half Circle  (Area)
Evaluate a Line Integral of xy with Respect to Arc Length (Mass of Wire)
Evaluate a Line Integral of x^2+y^2+z^2 with Respect to Arc Length(Mass of Wire)
Evaluate a Line Integral of x^3y^2 with Respect to x (Differential Form)
Evaluate the Line Integral of x^2z Along a Line Segment in 3D
Evaluate a Line Integral of in Differential Form
Evaluate a Line Integral  of F*dr
Evaluate a Line Integral of F*dr Around a Circle
Line Integral Application - Work of a Charged Particle
Line Integral Application:  Determine the Mass of a Wire
Determining the Potential Function of a Conservative Vector Field
The Fundamental Theorem of Line Integrals - Part 1
The Fundamental Theorem of Line Integrals - Part 2
Fundamental Theorem of Line Integrals - Closed Path/Curve
Ex 1:   Fundamental Theorem of Line Integrals - Given Vector Field in a Plane
Ex 2:   Fundamental Theorem of Line Integrals - Given Vector Field in a Plane (Not Conservative)  
Ex 3:   Fundamental Theorem of Line Integrals - Given Vector Field in a Plane
Ex 4:  Fundamental Theorem of Line Integrals - Given Vector Field in Space
Green's Theorem - Part 1
Green's Theorem - Part 2
Evaluate a Line Integral using Green's Theorem
Ex:  Use Green's Theorem to Evaluate a Line Integral (Rectangle)
Evaluate a Line Integral of F*dr Around a Circle with Green's Theorem
Ex:  Use Green's Theorem to Evaluate a Line Integral (Polar)
Ex:  Use Green's Theorem to Evaluate a Line Integral (Negative Orientation)
Ex:  Use Green's Theorem to Determine Area of a Region Enclosed by a Curve
Determining Area using Line Integrals
Flux Form of Green's Theorem
Determine the Flux of a 2D Vector Field Using Green's Theorem (Rectangle)
Determine the Flux of a 2D Vector Field Using Green's Theorem (Parabola)
Determine the Flux of a 2D Vector Field Using Green's Theorem (Hole)

Surface Integrals

Parameterized Surfaces
Write a Parameterized Surface Using Cartesian (Rectangular) Coordinates
Graph Parameterized Surfaces using 3D Calc Plotter
Area of a Parameterized Surface
Surface Integral with Explicit Surface Part 1
Surface Integral with Explicit Surface Part 2
Ex: Surface Area of a Function of Two Variables (Surface Integral)
Surface Integrals with Parameterized Surface - Part 1
Surface Integrals with Parameterized Surface - Part 2
Double Integrals - Surface Area of a Vector Valued Function Over a Region
Ex: Surface Area of a Parametric Surface (Surface Integral)
Surface Integral of a Vector Field - Part 1
Surface Integral of a Vector Field - Part 2
Ex: Evaluate a Surface Integral (Parametric Surface - Helicoid)
Ex: Evaluate a Surface Integral (Basic Explicit Surface - Plane Over Rectangle)
Ex: Evaluate a Surface Integral Using Polar Coordinates- Implicit Surface (Cone)
Ex: Evaluate a Flux Integral with Surface Given Explicitly (rectangle)
Ex: Evaluate a Flux Integral with Surface Given Parametrically (semicircle)
Ex:  Using a Flux Integral to Determine a Mass Flow Rate
Stoke's Theorem - Part 1
Stoke's Theorem - Part 2
Ex 1: Using Stoke's Theorem to Evaluate a Line Integral as a Surface Integral
Ex 2: Using Stoke's Theorem to Evaluate a Line Integral as a Surface Integral
Ex 1: Using Stoke's Theorem to Evaluate a Surface Integral as a Line Integral
Ex 2: Using Stoke's Theorem to Evaluate a Surface Integral as a Line Integral
The Divergence Theorem - Part 1
The Divergence Theorem - Part 2
Ex: Use the Divergence Theorem to Evaluate a Flux Integral (Rectangular Coordinates)
Ex: Use the Divergence Theorem to Evaluate a Flux Integral (Cylindrical Coordinates)
Ex: Use the Divergence Theorem to Evaluate a Flux Integral (Spherical Coordinates)
Use the Divergence Theorem to Determine the Flux Across a Hemisphere
Use the Divergence Theorem to Determine the Flux a Tetrahedron

Graphing Calculator

Determine the value of the derivative function on the graphing calculator
Determining the value of a definite integral on the graphing calculator 
Sequences on the TI84 Graphing Calculator
Sequences and Series on the TI84
Graph Partial Sums of an Infinite Series on the TI84
Graphing Parametric Equations in the TI84

3D Calc Plotter Videos

Graph 2D Vector Fields Using CalcPlot3D
Graph Points in 3D Using 3D Calc Plotter
Graph 3D Vectors Using 3D Calc Plotter
Graph Tangent Planes to Surfaces Using 3D Calc Plotter
Graph a Function of Two Variable Using 3D Calc Plotter
Graph a Contour Plots (Level Curves) Using 3D Calc Plotter
Graph Parameterized Surfaces using 3D Calc Plotter
Graph Implicit Equations (Quadric Surfaces) Using 3D Calc Plotter
Graph Space Curves Given as a Vector Function Using 3D Calc Plotter
Graph Tangent Lines to a Surface in the x and y Direction (Partial Derivatives)

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