How to determine the absolute value of a complex exponential function containing a symbolic variable?

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Mosharof Hossain
Mosharof Hossain 2022-12-3
评论： Mosharof Hossain 2022-12-12
I am determining the frequency response of a parallel RLC circuit. The input current is 10*sin(w*t). The phasor form is, I = 10 exp(j*w*t). The abs(I) is 10. But matlab gives 10*exp(-imag(t*w)). But whatever the value of w*t, the absolute value is always 10. How can I get magnitude from such complex exponential, without substituting the value of w and t?

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Torsten
Torsten 2022-12-3
Ran in:
syms omega t real
syms I0 positive
I = I0*exp(1i*omega*t);
abs(I)
ans = 
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