# Maple plot piecewise function for a mark scheme

• Maple
Staff Emeritus
Gold Member
I need to plot the following piecewise function for a mark scheme I'm writing, but I can't seem to get maple to plot it. I can define the function, but when I ask maple to plot it, it just hangs. Any help would be much appreciated. The function;

$$f(\theta):= \left\{\begin{array}{lcr} -\theta-\pi & \text{for} & \pi<\theta< 0 \\ \pi-\theta & \text{for} & 0<\theta<\pi \end{array}\right. \text{and}f(\theta+2\pi)=f(theta)$$

And I use the following command to try and plot it ;
Code:
plot(f(theta),theta=-4*\pi..4*\pi, y=-4..4, discont=true);

JasonRox
Homework Helper
Gold Member
Have you tried using "with(plots);" and searching up various commands that will do what you want to do?

Staff Emeritus
Gold Member
Hi Jason, thanks for the reply. I'm looking at fiddling it and doing a multiple plot of the different functions. Is is possible to define different restricted domains for each function?

JasonRox
Homework Helper
Gold Member
Hi Jason, thanks for the reply. I'm looking at fiddling it and doing a multiple plot of the different functions. Is is possible to define different restricted domains for each function?

That's what I tried to do first.

Ok, for one part, do...

p1:=plot(function,x=a..b):

So, you call the first plot with the boundaries p1. I use colon because we don't need the plot to come yet.

Then, do the next part of the plot...

p2:=plot(function,x=a..b):

So, they are your restricted domains respectfully.

Now, to see both together, you can do...

display({p1,p2});

I'm not sure how that will look, but you can try it out. If you don't understand what I'm saying, let me know.

Staff Emeritus
Gold Member
Thanks Jason, I've just figured it out now using your with(plots) command, it's been a real pain in the arse! I'll post the code and the plot for those who are interested when I've finished.

Thanks again Jason, next time your in the UK, let me buy you a beer...

JasonRox
Homework Helper
Gold Member
Thanks again Jason, next time your in the UK, let me buy you a beer...

That'll never happen.

Anyways, cheers and good luck with everything.