# humps: Matlab Test Functions In pracma: Practical Numerical Math Functions

## Description

Matlab test functions.

## Usage

 1 2 3 humps(x) sinc(x) psinc(x, n) 

## Arguments

 x numeric scalar or vector. n positive integer.

## Details

humps is a test function for finding zeros, for optimization and integration. Its root is at x = 1.2995, a (local) minimum at x = 0.6370, and the integral from 0.5 to 1.0 is 8.0715.

sinc is defined as sinc(t) = \frac{\sin(π t)}{π t}. It is the continuous inverse Fourier transform of the rectangular pulse of width and height 1.

psinc is the 'periodic sinc function' and is defined as psinc(x,n) = \frac{\sin(x n/2)}{n \sin(x/2)}.

## Value

Numeric scalar or vector.

## Examples

 1 2 3 4 5 6 7 ## Not run: plot(humps(), type="l"); grid() x <- seq(0, 10, length=101) plot(x, sinc(x), type="l"); grid() ## End(Not run) 

### Example output




pracma documentation built on Dec. 11, 2021, 9:57 a.m.