MATLAB Answers

how to plot euler formula in matlab?

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ABTJ
ABTJ 18 Feb 2020
댓글: Star Strider 19 Feb 2020
I want to plot exponential signal that is euler formula exp(i*pi) in MATLAB but output figure is empty and does not shows graph as shown in attached, even i tried plotting simpler version, i mean
exp(i*pi),but still figure was empty

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Turlough Hughes
Turlough Hughes 18 Feb 2020
There is an example of plotting exponentials in the documentation here, see the sub heading Plot Exponential Function. If you're trying to observe a single point on the plot you could also write
plot(y,'or')

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Star Strider
Star Strider 18 Feb 2020
The plot function plots lines between points. You have only one point, so if you change the plot call to:
y = exp(100*i*pi)
figure
plot(y,'p')
plots a star at (1,0).

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Star Strider
Star Strider 18 Feb 2020
If you mean the Euler identity :
y = exp(100*i*pi)
y = cos(100*pi)+j*sin(100*pi)
with both producing:
y =
1.0000e+000 + 1.9644e-015i
y =
1.0000e+000 + 1.9644e-015i
That is the best I can do with the information I have.
ABTJ
ABTJ 19 Feb 2020
But still in this case we are getting only one point at (1,0). How we can see ful wave/plot of euler identity for atlest one period??
Star Strider
Star Strider 19 Feb 2020
Add a time-varying vector:
t = linspace(0,2);
y = exp(100*i*pi*t)
y = cos(100*pi*t)+j*sin(100*pi*t);
and now the results will go from 0 to .
To see it:
figure
plot(t, real(y), t, imag(y))
grid
The two ‘y’ vectors are the same, so this works for either one of them.

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추가 답변(1개)

KSSV
KSSV 18 Feb 2020
편집: KSSV 18 Feb 2020
i = linspace(0,1,100) ;
y = exp(100*i*pi) ;
plot(i,y)

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