Clear Filters
Clear Filters

errors on function vs time plot

1 view (last 30 days)
Laila on 19 Jan 2023
Commented: Star Strider on 19 Jan 2023
Hi, I am trying to make a function vs time plot of v = 12e^(-8t) vs time using t =linspace(-1,1,100) (i also wasnt sure what parameters to use for the linspace funcation) where v = 0 when t is less then 00. But when i try to run the code it says there is an error in my v(t) equation line. I have't used MATHLAB a lot so im not sure if its a sytax issue or something else. This is my code. Thanks for any help!
system v(t)
t = linspace(-1,1,100);
v(t) = 12.*e^-8.*t;
if t < 0
v(t) = 0;
plot(v(t), t);
  1 Comment
Laila on 19 Jan 2023
I have also tried using exp(1) instead of e but still no luck.

Sign in to comment.

Answers (2)

Torsten on 19 Jan 2023
Edited: Torsten on 19 Jan 2023
t = linspace(-1,1,100);
v = 12*exp(-8*t).*(t>=0);

Star Strider
Star Strider on 19 Jan 2023
The exponential function in MATLAB (and every other programming language I have encountered) is exp.
Try something like this —
t = linspace(-1,1,100);
v = @(t) 12.*exp(-8.*t);
vt = v(t);
vt(t < 0) = 0;
plot(t, vt);


Find more on 2-D and 3-D Plots in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!