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VED1
E L-LOVELY-H math5-1 IInd 6-8-11 IIIrd 24-1-12 IVth 21-4-12 Vth 20-8-12 VIth 10-9-12

fJekJh^5 L d{i/ ns/ T[Zuso eqw d/ fBy/VB

y 1 = [cos (sin x)]. cos x HHHH(1) B'N

d[pkok fBy/VB eoB s/

2
fJ; soQK y 2 + y 1 tan x + y cos x = 0 H
ax
T[dkjoD 4H i/eo y = e sin bx j't/ sK f;ZX eo' fe
2
d y dy
2
− a +( a +a y = 0
2
2
)
dx 2 dx
ax
jZb L fdZsk j?, y = e sin bx HHH(1)
x d/ ;kg/y fBy/VB eoB s/,

HHH(2)

x d/ ;kg/y d[pkok fBy/VB eoB s/,

;wheoD (1) ns/ (2) s'A
2
d y dy
fJ; soQK - 2 +(a +a )y = H
2
2
0a
dx 2 dx

;t?^w[bKeD (Self Assessment)
1H ykbh ;EkBK dh g{osh eo' (Fill in the blanks)^
d  dy 
(i)   y dk HHHHHHHHHHHHHH fBy/VB^r[DKe efjzd/ jB.

dx dx 
d  dy  d dy
2
2
(ii)  2  HHHHHHHHHHHHH (iii) (HHHHHHHHHHHHH) = H
dx dx  dx dx 2


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