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The sum of the slope of the lines given by x²-2cx-7y²=0 is four times their product c has the value

The sum of the slope of the lines given by x²-2cx-7y²=0 is four times their product c has the value

Grade:12th pass

1 Answers

Arun
25750 Points
6 years ago
 
Let the lines are
L1:
y = m1x
And L2:
y = m2x
Then m1 + m2 = -2c/7
m1* m2= -1/7
Given
m1 +m2 = 4 m1*m2
Put the values and you will get answer
as c = 2

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