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Byju's Answer
Standard VIII
Mathematics
Simplification of an Expression
If fx = [ x -...
Question
If
f
(
x
) =
⎧
⎨
⎩
x
−
2
3
x
2
−
10
x
+
8
;
x
≠
2
1
2
;
x
=
2
, then
यदि
f
(
x
) =
⎧
⎨
⎩
x
−
2
3
x
2
−
10
x
+
8
;
x
≠
2
1
2
;
x
=
2
, तब
A
f
′(2) =
−
3
4
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B
f
′(2) =
1
2
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C
f
′(2) =
−
1
4
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D
f
(
x
) is not differentiable at
x
= 2
x
= 2 पर
f
(
x
) अवकलनीय नहीं है
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Solution
The correct option is
A
f
′(2) =
−
3
4
Solution
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Similar questions
Q.
Let
f
(
x
)
be defined on
[
−
2
,
2
]
, and is given by
f
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x
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=
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≤
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≤
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x
−
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,
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≤
x
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a
n
d
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Q.
Simplify the expression for
f
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and then find
f
′
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, if
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x
)
=
(
√
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−
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√
x
+
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+
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+
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−
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√
x
2
−
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−
x
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)
−
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−
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(
√
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×
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Q.
Show that following function
f
(
x
)
, does not continuous at
x
=
0
f
(
x
)
=
⎧
⎪ ⎪ ⎪ ⎪ ⎪ ⎪
⎨
⎪ ⎪ ⎪ ⎪ ⎪ ⎪
⎩
e
1
x
1
+
e
1
x
x
≠
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x
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Q.
Find the value of k , so that the function
f
(
x
)
is continuous at the indicated point
f
(
x
)
=
8
x
−
2
x
k
x
−
1
f
o
r
x
≠
o
=
2
x
=
0
}
a
t
x
=
0
Q.
Let A=
⎛
⎜
⎝
−
5
−
8
−
7
3
5
4
2
3
3
⎞
⎟
⎠
,
B
=
⎛
⎜
⎝
x
y
z
⎞
⎟
⎠
. If AB is scalar
(
≠
0
)
multiple of B, then x+y=
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