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VED1
E L-LOVELY-H math4-1 IInd 21-10-11 IIIrd 24-1-12 IVth 21-4-12 Vth 20-8-12 VIth 10-9-12

noEPk;soh dk rfDs

B'N dx
= 2at
dt
ns/ y = 2at
d'jK gZyK dk t d/ ;kg/y fBy/VB eoB s/

dy
= 2a
dt
dy
dy dt 2 1a
∴ = = =
dx dx 2at t
dt
T[Zso
T[dkjoD 2H i/eo x = a cos θ ns/ y = b sin θ, sK dy/dx gsk eo'.

dx dy
jZb L fJZE/ =− a sin θ ns/ = b cosθ
dθ dθ
dy dy dx b cosθ b
∴ = = =− cot θ T[Zso
dx dθ dθ − a sin θ a

gqPBktbh 4H4

dy
gsk eo'^
dx

T[Zso
b
t
1H cosec θ 2H –cot t 3H t (e – sin t)
a
4H (ii) ^3$2

;t?^w[bKeD (Self Assessment)

2H pj[ftebgh gqPB (Multiple Choice Questions)^
(i) i/eo x ns/ y d/ ftZu e'Jh nfijk ;wheoD fdZsk j't/ fi;B{z s[ozs y d/ bJh jZb BjhA
ehsk ik ;e/, sK y B{z x dk fejVk cbB ejKr/<
(a) n;gPN (b) ;gPN (c) ;wKso (d) ;zrs
(ii) i/eo y dk wkB x d/ o{g ftZu gsk ehsk ik ;e/, sK y B{z x dk fejkVk cbB ejKr/<

(a) n;gPN (b) ;gPN (c) ;wKso (d) ;zrs

92 LOVELY PROFESSIONAL UNIVERSITY