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Byju's Answer
Standard XII
Mathematics
Real Valued Functions
Given that ...
Question
Given that
x
is a real number satisfying
5
x
2
−
26
x
+
5
3
x
2
−
10
x
+
3
<
0
, then
A
x
<
1
5
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B
1
5
<
x
<
3
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C
x
>
5
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D
1
5
<
x
<
1
3
or
3
<
x
<
5
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Solution
The correct option is
C
1
5
<
x
<
1
3
or
3
<
x
<
5
5
x
(
x
−
5
)
−
(
x
−
5
)
3
x
(
x
−
3
)
−
(
x
−
3
)
<
0
⇒
(
5
x
−
1
)
(
x
−
5
)
(
3
x
−
1
)
(
x
−
3
)
<
0
Here we can use wavy curve method to determine the sign of the function.
We clearly get option D as the range of values for which given expression is negative.
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Q.
Given that,
x
is a real number satisfying
5
x
2
−
26
x
+
5
3
x
2
−
10
x
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, then
Q.
Given that
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is a real number satisfying
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x
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