angie57581 angie57581
  • 07-05-2024
  • Mathematics
Answered

Solve
y''-7y'+12y={(1,0<=t<9),(y(0)=1 and y'(0)=0):} -3,t>=9 y(t)=f(t)-g(t)u(t-9), where
f(t)=



Answer :

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