fplot() for three functions

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Shuqing Qi
Shuqing Qi 2021-2-6
评论： Shuqing Qi 2021-2-7
I wonder why my fplot()s output errors instead of the graph below?

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Alan Stevens
Alan Stevens 2021-2-6
Try using limits, e.g.
fplot(@(t) 16/3*exp(-2*t)-4/3*exp(-8*t), [0 20]);
Also use
t.*exp(...etc) not t*exp(...etc)
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Alan Stevens
Alan Stevens 2021-2-6
You need to use
exp(-4*t).*cos(3*t)
and
exp(-4*t).*sin(3*t)
Shuqing Qi
Shuqing Qi 2021-2-7
That works! Thanks a lot!

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