# polyder

Derivative of a polynomial.

## Syntax

q = polyder(p)

q = polyder(a,b)

[n,d] = polyder(a,b)

## Inputs

`p`- The coefficients of the polynomial to differentiate.
`a,b`- The coefficients of a polynomial product (
`a`*`b`) or quotient (`a`/`b`) to differentiate, depending on the outputs specified.

## Outputs

- q
- The coefficients of the polynomial derivative.
- n,d
- The coefficients of the polynomial derivative, expressed as a ratio
(
`n`/`d`) when the input is a polynomial quotient.

## Example

Derivative of a single polynomial, 2x^4 + 3x^3 + 3x^2 + 2x + 1.

`q = polyder([2,3,3,2,1])`

```
q = [Matrix] 1 x 4
8 9 6 2
```