Question

Assume the following commands have been entered in Matlab: >>t=0:0.1:3; >>x=t.sin(t); >>y=cos(t)+2sin(t); if you wanted to plot both x and y on the vertical axis of the same graph, which command(s) would you enter?

a) plot(t, [x, y])
b) plot(t, x); hold on; plot(t, y)
c) plot(x, y);
d) plot(t, x); plot(t, y)

Answer 1

In Matlab, to plot both x and y against time t on the same graph, use 'plot(t, x); hold on; plot(t, y)' which uses the 'hold on' command to keep both plots on the same figure.

Step-by-step explanation:

To plot both x and y on the vertical axis of the same graph in Matlab with time (t) as the independent variable on the horizontal axis, you would use the following command: plot(t, x); hold on; plot(t, y).

This sequence of commands first plots the variable x against time, then holds the current figure so that the next plot is done on the same graph, and finally plots the variable y against time. The 'hold on' command is crucial as it allows for both lines to be plotted on the same figure without clearing the previous line.