Adding third dimenstion to 2D plot

Hi everyone, I'd like to plot three functions:

x=[-20:0.001:20];
y1=sin(x);
y2=x*x+x;
y3=x*x*x;

where y1(x) starts at t=0, y2(x) at t=5 and y3(x) at t=10. The x is on the first axis, the y_i functions is on the second axes and the time t is on the third axes. How could I do it (t=-10:0.001:10)?

An example of what I want is the following:

Thank you for your time.

Answer 1

[Walter Roberson]

x=[-20:0.001:20];
y1=sin(x);
y2=x.*x+x;
y3=x.*x.*x;
plot3(x,y1,0 * ones(size(x)))
hold on
plot3(x,y2,5 * ones(size(x)))
plot3(x,y3,10 * ones(size(x)))
hold off

[Gennaro Arguzzi]

Hi @Walter Roberson, the result is unclear, the functions are unrecognisable.

Please post the code+image in future.

[Walter Roberson]

sin(x) is in the range -1 to +1. x^3 is in the range -8000 to +8000 over -20 to +20. You cannot expect to be able to recognize sin(x) in the same plot as x^3 over that range of values.