MATLAB Function Reference |

**Syntax**

**Description**

The `polyder`

function calculates the derivative of polynomials, polynomial products, and polynomial quotients. The operands `a`

, `b`

, and `p`

are vectors whose elements are the coefficients of a polynomial in descending powers.

```
k = polyder(p)
```

returns the derivative of the polynomial `p`

.

```
k = polyder(a,b)
```

returns the derivative of the product of the polynomials `a`

and `b`

.

```
[q,d] = polyder(b,a)
```

returns the numerator `q`

and denominator `d`

of the derivative of the polynomial quotient `b/a`

.

**Examples**

This result represents the polynomial

**See Also**

polyarea | polyeig |