equa diff lin Flashcards

1
Q

y’+ay=b

A

y=Cexp(-A(x)) avec A=primitive de a

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2
Q

si a constante et b un poly

A

sol part=Q avec degQ=degb si a<>0

=(degb+1) si a=0

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3
Q

a constant et b=p(x) exp(alpha x)

A

sol part=Q exp(alpha x)
avec degQ=degp si alpha+ a<>0
=(degp+1) sinon

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