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Byju's Answer
Standard XII
Mathematics
Logarithmic Differentiation
y = √log x+√l...
Question
y
=
√
l
o
g
x
+
√
l
o
g
x
+
√
l
o
g
x
+
_____
∞
show that
d
y
d
x
=
1
x
(
2
y
−
1
)
.
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Solution
Given,
y
=
√
l
o
g
x
+
√
l
o
g
x
+
√
l
o
g
x
+
_____
∞
.......(1)
Squaring both sides we get,
y
2
=
log
x
+
y
[ Using (1)]
Differentiating both sides we get,
(
2
y
−
1
)
d
y
d
x
=
1
x
or,
d
y
d
x
=
1
x
(
2
y
−
1
)
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0
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