## How to make function f(x)=-x periodic of (2*pi) explicitly?

on 28 Jun 2013

### Roger Stafford (view profile)

Hi Folks,

I have a function f(x)=-x that starts from [-pi:pi] and I wanna repeat this function for a few periods of (2*pi) with the amplitude ranged between [pi to -pi].

## Products

No products are associated with this question.

### Roger Stafford (view profile)

on 28 Jun 2013

` f(x) = mod(-x+pi,2*pi)-pi;`

Mohammed Sayan

### Mohammed Sayan (view profile)

on 28 Jun 2013

Thanks,

but I want the lines f(x)=-x disconnected.

Is is possible?

Roger Stafford

### Roger Stafford (view profile)

on 28 Jun 2013

Are you referring to doing a plot of this function? If you don't want a line connecting the points where a discontinuity occurs, you should use the '.' plotting option rather than '-'. Your plot will then be a series of dots. If you don't want dots, you will have to plot each 2*pi interval separately using the "hold on" instruction between the intervals.

#### Join the 15-year community celebration.

Play games and win prizes!

MATLAB and Simulink resources for Arduino, LEGO, and Raspberry Pi