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Byju's Answer
Standard XII
Mathematics
Chain Rule of Differentiation
Slopes of lin...
Question
Slopes of line respectively by
3
x
2
+
k
x
y
−
y
2
=
0
differ by
4
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Solution
According to the problem
Let us consider the equation
3
x
2
+
k
x
y
−
y
2
=
0
m
1
m
2
=
k
−
1
=
−
k
Therefore,
m
1
m
2
=
−
3
Hence,
(
m
1
−
m
2
)
2
=
(
m
1
+
m
2
)
2
−
4
m
1
m
2
Implies that
k
2
+
12
=
16
Since,
m
1
−
m
2
=
4
k
=
±
2
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