Invalid indexing or function definition

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Luis Higuera
Luis Higuera 2020-11-25
评论： Luis Higuera 2020-11-25
syms y(t) s y_lt
dy=diff(y,t);
eqn = dy-y==2*cos(5*t)
cond=y(0)==0
eqnLt=laplace(eqn,t,s)
eqnLt = subs(eqnLt,laplace(y,t,s),y_lt)
y_lt=solve(eqnLt,y_lt)
ysol=ilaplace(y_lt)
Hi, I get this error with the solve function, does anyone know why the error?

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回答（1 个）

Walter Roberson
Walter Roberson 2020-11-25
I suspect that you accidentally created a variable named solve

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