Pages similar to: The derivative matrix
- Subtleties of differentiability in higher dimensions
 A description of some of the tricky ways where a function of multiple variables can fail to be differentiable. Example two variable functions are illustrated with interactive graphics.
- The definition of differentiability in higher dimensions
 The definition of differentiability for multivariable functions. Informal derivation designed to give intuition behind the condition for a function to be differentiable.
- An introduction to the directional derivative and the gradient
 Interactive graphics about a mountain range illustrate the concepts behind the directional derivative and the gradient of scalar-valued functions of two variables.
- The multidimensional differentiability theorem
 Discussion of theorem that gives conditions which guarantee that a multivariable function is differentiable.
- Non-differentiable functions must have discontinuous partial derivatives
 A visual tour demonstrating discontinuous partial derivatives of a non-differentiable function, as required by the differentiability theorem.
- A differentiable function with discontinuous partial derivatives
 Illustration that discontinuous partial derivatives need not exclude a function from being differentiable.
- Matrices and linear transformations
 A description of how every matrix can be associated with a linear transformation.
- Introduction to partial derivatives
 The concept of partial derivatives is introduced with an illustration of heating costs. Interactive graphics demonstrate the properties of partial derivatives.
- Partial derivative examples
 Examples of how to calculate partial derivatives.
- Partial derivative by limit definition
 Description with example of how to calculate the partial derivative from its limit definition.
- Introduction to differentiability in higher dimensions
 An introduction to the basic concept of the differentiability of a function of multiple variables. Discussion centers around the existence of a tangent plane to a function of two variables.
- Examples of calculating the derivative
 Examples showing how to calculate the derivative and linear approximation of multivariable functions.
- Derivation of the directional derivative and the gradient
 Derivation of the directional derivative and the gradient from the definition of differentiability of scalar-valued multivariable functions.
- Introduction to Taylor's theorem for multivariable functions
 Development of Taylor's polynomial for functions of many variables.
- Elementary partial derivative problems
 Sample problems illustrating the partial derivative.
- Solutions to elementary partial derivative problems
 Solutions to sample problems illustrating the partial derivative.
- Matrices and determinants for multivariable calculus
 Brief description of matrices and determinants, at the level needed for multivariable calculus.
- Multiplying matrices and vectors
 How to multiply matrices with vectors and other matrices.
- Matrix and vector multiplication examples
 Examples demonstrating how to multiply matrices and vectors.
- Introduction to matrices
 A brief introduction to matrices.
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