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Byju's Answer
Standard XII
Mathematics
Logarithmic Differentiation
What is the d...
Question
What is the differenciation of
2
x
wrt
x
?
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Solution
We need to find the differentiation of
2
x
.
Apply exponent rule
a
b
=
e
b
l
n
(
a
)
⇒
2
x
=
e
x
l
n
(
2
)
.
.
.
(
1
)
Thus we need to find
d
d
x
(
e
x
(
l
n
(
2
)
)
)
Let
f
=
e
u
.
u
=
x
l
n
(
2
)
We know that
d
f
(
u
)
d
x
=
d
f
d
u
⋅
d
u
d
x
Thus
d
d
x
(
e
x
(
l
n
(
2
)
)
)
=
d
d
u
(
e
u
)
⋅
d
d
x
(
x
l
n
(
2
)
)
=
e
u
⋅
l
n
(
2
)
Substitute back
u
=
x
l
n
(
2
)
we get
=
e
x
l
n
(
2
)
⋅
l
n
(
2
)
=
2
x
⋅
l
n
(
2
)
b
y
(
1
)
Thus
d
d
x
(
2
x
)
=
2
x
⋅
l
n
(
2
)
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