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Question
Mathematics
If y=tan-1((√x-x/1+x3/2)), then y'(1) is equal to
Q. If
y
=
t
a
n
−
1
(
1
+
x
3/2
x
−
x
)
, then
y
′
(
1
)
is equal to
9866
217
Continuity and Differentiability
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A
0
17%
B
2
1
21%
C
−
1
39%
D
−
4
1
23%
Solution:
y
=
t
a
n
−
1
(
1
+
x
3/2
x
−
x
)
=
t
a
n
−
1
(
1
+
x
⋅
x
x
−
x
)
=
t
a
n
−
1
(
x
)
−
t
a
n
−
1
(
x
)
Differentiating
w
.
r
.
t
.
x
, we get
y
′
=
1
+
x
1
⋅
2
x
1
−
1
+
x
2
1
⇒
y
′
(
1
)
=
2
1
⋅
2
1
−
2
1
=
−
4
1