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When I tried to Laplace transform a differential equation, errors appeared, HELP

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syms x t s X F
How this transformation could be done otherwise?

Accepted Answer

Ameer Hamza
Ameer Hamza on 13 Jun 2020
Edited: Ameer Hamza on 13 Jun 2020
According to documentation, laplace() accepts symbolic inputs. You should input the symbolic equation
syms x(t) s X F
F = laplace(diff(x(t),t,t)+7*diff(x(t),t)+10*x(t)==20, s)
Also, define syms x(t) as a symbolic function. Defining them seperately will give an error.
Ameer Hamza
Ameer Hamza on 13 Jun 2020
I am glad to be of help!
My guess is that you have followed a tutorial for an older version. In the past, char arrays were supported for symbolic toolbox functions, now that support is being removed.

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