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Dear All,

y" (t)+ y'(t)+y(t)=u^{2}(t)-1

Linearizethe system about y(t)=0, u(t)=1, for all t>= 0

can we say that this equation is already linear at the given point

which will be y" (t)+ y'(t)+0=1-1 => y" (t) + y'(t)= 0

and no need for linearization.

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# Help for Linearization

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