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

Question

Arun · Answer

Let the lines are L 1 : y = m 1 x And L 2 : y = m 2 x Then m 1 + m 2 = -2c/7 m 1 * m 2 = -1/7 Given m 1 +m 2 = 4 m 1 *m 2 Put the values and you will get answer as c = 2

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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

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