**In The Continuum Mechanics of Solids**

Several important results in continuum mechanics require the derivatives of vectors with respect to vectors and of tensors with respect to vectors and tensors. The **directional directive** provides a systematic way of finding these derivatives.

The definitions of directional derivatives for various situations are given below. It is assumed that the functions are sufficiently smooth that derivatives can be taken.

Read more about this topic: Directional Derivative

### Other articles related to "in the continuum mechanics of solids, in the":

**In The Continuum Mechanics of Solids**- Derivatives of Tensor Valued Functions of Second-order Tensors

... Then the derivative of with respect to (or at )

**in the**direction is the fourth order tensor defined as for all second order tensors ...

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