Using Subplot in matlab

I couldn't figure how to solve that ! can anyone help me understand it ?

Answer 1

[Image Analyst]

Try this:

x = linspace(1, 10, 500);
y = sin(x) ./ x;
subplot(2, 2, 1);
plot(x, y, 'b-', 'LineWidth', 2);
grid on;
subplot(2, 2, 2);
y = .....
plot(....
etc.
subplot(2, 2, 3);
% code to compute the third y
subplot(2, 2, 4);
% code....

Since x is a vector make sure you use ./, .*, and .^ rather than the non-dotted versions /, *, and ^.