How do you use the plot3 function with an interval?
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I have three functions. They are x = (3+5*cos(t))*cos(t), y = (3+5*cos(t))*sin(t), and z = 2*t^2. I have to create a script that uses the plot3 function to plot the position for 0 ≤ t ≤ 30sec in increments of 0.1sec. How would you go about doing this?
回答（1 个）
Basil C.
2018-7-4
You could try to run the following code
t=1:0.1:30;
x = 3*cos(t)+5*cos(t).^2;
y = 3*sin(t)+ 5/2*sin(2*t);
z = 2*t.^2;
figure
plot3(x,y,z)
I have eleminated the use of * operator and used basic trignometric formulae and this was the plot i obtained
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2018-7-4
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