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Byju's Answer
Standard XII
Mathematics
Strictly Increasing Functions
fx=x+sinx is ...
Question
f
(
x
)
=
x
+
sin
x
is decreasing when
x
lies in the interval
A
[
−
1
,
1
]
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B
[
2
,
3
]
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C
[
3
,
4
]
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D
No value of
x
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Solution
The correct option is
A
No value of
x
given
f
(
x
)
is decreasing
so
f
′
(
x
)
>
0
1
+
c
o
s
x
<
0
c
o
s
x
>
0
not true for any value of x
Suggest Corrections
0
Similar questions
Q.
Let
f
(
x
)
=
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x
−
x
cos
x
,
x
∈
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The least positive value of
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Q.
The function
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The value of
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