I have the following function:
f(t) = 0 if t < 0
f(t) = 2*t^2 - 4*t +3 if 1 <= t < 2
f(t) = Cos(t) if 2 <= t
I am a new MATLAB user, and I do not how to plot the function on a single figure over the range 0<=t<=5.
Any ideas about What I have to do?
thanks for your help but I could not implement any code or commands to get the answer. Instead of, I was lucky and I found an example and the MATLAB commands are as follow:
x=linspace(0,5,3000);
y=(0*x).*(x<1) + (2*(x.^2)-(4.*x)+3).*((1<=x) & (x<2))
+ (cos(x)).*(2<=x);
plot(x,y, '.'), grid
axis([0 5 -2 4])
title ('Plot of f(t)'), xlabel('t'), ylabel('f(t)')
If you mean limiting x axis, then after using plot use
xlim([xmin xmax])
In your case
xlim([0 5])
Use ylim
for limiting y axis
Ok, I think I misunderstood you
Also I think, you've made mistake in your formulas
f(t) = 0 if 0<= t < 1 f(t) = 2*t^2 - 4*t +3 if 1 <= t < 2 f(t) = Cos(t) if 2 <= t
figure;
hold on;
x = 0:0.1:0.9; y = 0 * x; plot( x, y );
x = 1:0.1:1.9; y = 2 * x * x - 4 * x + 3; plot( x, y );
x = 2:0.1:5; y = cos( x ); plot( x, y );
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