
Question 11
QCM N°15
lundi 28 janvier 2019
-y"+ y' =
it
22t i22
i
t
22t i22
2t 2 i22
i22i22
Question 12
y"+ 4y' 4y
t + 22t i22
i2t
22t i22
i22t i22
22i22
Question 13
y"+ y=
i
t
2t i22
2 i22
it i22
Question 14
i 2 i22
t + 22
t2 22
1
e.__,.t