program to display the curve of the function

program pour afficher la courbe de la fonction suivant

g=2t+2 y[0,2[

g=2 cos(4pi*t) t=[2,3]

 for t=[0:3];
 
if t<2
 
        g=2*t+2;
    plot(g)
   
else t>=2
    y=2*cos(4*pi*t);
    plot(y)
end
 end

Answer 1

[Akshat]

Hi Adam,

I see you are trying to plot the "g" when "t" is lesser than 2, and "y" when "t" is greater than or equal to 2.

These are the points I think you are missing:

1. In order to get a plot, you need two arrays, with the values containing at the corresponding time stamps.
2. In the function definition above the code given by you, you haven't specified anything about "y". I am going to assume that the function is only "g" and it takes different functions at different time stamps.
3. The time stamps that you are taking, are [0,1,2,3]. This is a very big time gap, and the curve will not be smooth, rather it will just have 4 points. Hence, I have changed the step size to 0.1, giving us 40 points to work with, making the curve a little more smooth. This way the points will be [0,0.1,0.2.....2.8,2.9,3].

Here is the code with changes that I suggested:

t = 0:0.1:3; % Use a finer step for smoother plot

g = zeros(size(t));

for i = 1:length(t)
    if t(i) < 2
        g(i) = 2*t(i) + 2;
    else
        g(i) = 2*cos(4*pi*t(i));
    end
end

figure;
plot(t, g, 'LineWidth', 2);
xlabel('t');
ylabel('g(t)');
title('Piecewise Function Plot');
grid on;