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

Question

syms x t s X F
F=laplace('diff(x(t),t,t)+7*diff(x(t),t)+10*x(t)=20',s)

How this transformation could be done otherwise?

Answer 1

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.