# Graph Tangent Planes to Surfaces Using 3D Calc Plotter

This video shows tangent planes to surfaces using 3D Calc Plotter.

# Graph Space Curves Given as a Vector Function Using 3D Calc Plotter

This video explains how to graph a space curve using the 3D Calc Plotter JavaScript App.

# Linear Approximation for a Function Value (Function of Two Variables)

This video explains how to approximate a function value using a tangent plane or a linear approximation.

# Determine a Function Value and Derivative Value Using Tangent Line

This video explains how to determine a function value and a derivative value from two points on a tangent line.

# Tangent Line Approximation Given a Function and Derivative Function Value

This video explains how to approximate function values using a derivative value and a function value.

# Ex: Determine the Intervals for Which the Slope of Tangent Lines is Positive, Negative, and Zero

This video explains how to determine where on a graph the slope of a tangent line is positive, negative, and zero.

# Ex: Determine the Sign the Slope of a Tangent Line at Point on a Function

This video explains how to determine the sign of the slope of a tangent line to the graph of a function at a given point.