Book
Linear Algebra
Author
Gilbert Strang
Edition
t=var('t') y1=function('y1',t) deq=diff(y1,t,2)+2*diff(y1,t,1)+y1-e^t==0 desolve(deq,[y1,t]) y2=function('y2',t) deq1=diff(y2,t,1)+desolve(deq,[y1,t])-e^t==0 desolve(deq1,[y2,t])
Solution by:
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