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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 dy
x
T[dkjoD 5H i/eo (sin y) = a, sK dk wkB gsk eo'.
dx
x
jZb L (sin y) = a
d'jK gZyK dk bx[rDe b?D s/

x
log (sin y) = log a
iK x log sin y = log a
d'jK gZyK dk x d/ ;kg/y fBy/VB eoB s/

T[Zso

dy
x
y
T[dkjoD 6H i/eo (cos x) = (sin y) j't/, sK gsk eo'.
dx
y
x
jZb L (cos x) = (sin y)
d' gZyK dk bx[rDe b?D s/
y log cos x = x log sin y
x d/ ;kg/y fBy/VB eoB s/

T[Zso

2
2
T[dkjoD 7H log (xy) = x + y dk x d/ ;kg/y fBy/VB r[DKe dy gsk eo'.
dx
2
2
jZb L log (xy) = x + y
2
2
log x + log y = x + y
x d/ ;kg/y fBy/VB s'A

T[Zso

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