Confused with solve function.

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Eren Genc
Eren Genc on 21 Dec 2020
Answered: Star Strider on 21 Dec 2020
I'm confused with the solve function. I used it this way before, can't find the issue here. Why it's not solving?

Answers (1)

Star Strider
Star Strider on 21 Dec 2020
This (typed in laboriously because you posted an image of your code rather than the code itself):
syms s X(s) Y(s) U(s)
TF_XU = (s^2 + 3*s + 5)*X(s) == (s^2 + s)*U(s) + (2*s^2 + 4*s)*Y(s);
TF = isolate(TF_XU,X)
produces:
TF =
X(s) == (Y(s)*(2*s^2 + 4*s) + U(s)*(s^2 + s))/(s^2 + 3*s + 5)
This is likely as close as you can get.

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