How do I plot piecewise defined functions in different colours.

Good day

I want to write a program to plot piecewise defined functions on the same graph in different colour.The functions are:

F(x)=0.5X if X<=100 ; 50 +0.2(x-1000) if 100<x<=200 ; 75+0.5x if x>200

On same graph with

G(X)= 0.01X IF X<=75 ; 50+0.1(X-75) IF x>75

Note these may not be actual figures.Just for illustrative purposes.

Thanks.

[Adam]

You'd have to just define each piece as its own plot and give them the colour you want. You can't multicolour a single plot object.

doc hold

shows how to keep existing plots on an axes when you add a new one.

Answer 1

[José-Luis]

 myFun = @(x)  ((x<=100).*(0.5 .* x))  +  ((x>100 & x<=200) .* (50+0.2.*(x-1000))) + ((x>200).*(75+(0.5.* x)));

 fplot(myFun,[0, 300],'Color',rand(1,3));

Same principle can be applied for g(x).

Don't forget to hold on

[bless Tsikaz]

Thanks Jose.I will quickly try that out.