webwork 8

-3£
① 9y
'


19 Se
''

y
t
by t =
.




Z
f. t I



"
(72+6×+9) e
-

-
o



?

(7*3) -

-
O




X =-3 X =-3




yzltl-cze-3.tt
't
y ,
It ) - C, E

3T
te
- - '
Lt ) =
C. e +
cze
y

-3T
Stf
-




) (t )
Yb , Lt
=
e =
e
ybz




=/
sty
St




e.es?;ee.. e/=e-oefLt)=19.5e-3t
-




WH ) e-
see
= e

ie
'
" Ieee ,
*
-




-



t 't I




f f
v. Lt ) = -


fltlybzltldt Vz Lt )
-
- f- Lt ) Yb , H ) dt

WH ) WH )



Vitt)ybi It )
Yp Lt )
= + V2 Lt > ybzlt )




f Ceti )
" H) 9.75 In
it
-
-
=
at
-




y




119.52
↳ It )= dt =
19.5 tan
- '
(t )
-12+1



"
e- f- 9.75 In ) (t)
)
'

yplt ) H2
-
=
-11 t 19.5 tan

, ② y
"
t
364 =
12 Sec Cbt )


Lt ) -
12 Sec ( Gt )
g

t
Yp
=
y, V
, Yz Vz



of
y , and y, are solutions
homogeneous equations



f Yw:{ ft
) at
vi-fy.gl#
=
" - at

WH )



WH ) =




?
I see Cbt ) ) cos lot ) 2-46-4
Jin
ans
=
+
-