हिंदी

Form the differential equation of all lines which makes intercept 3 on x-axis.

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प्रश्न

Form the differential equation of all lines which makes intercept 3 on x-axis.

योग
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उत्तर

Equation of straight line is y = mx + c

At x-axis, y = 0

So, x = `(-c)/m`

Here, slope = m

If slope and x-intercept are equal

`(-c)/m = m`   

⇒ c = – m2

∴ y = mx – m2

∴ `(dy)/(dx)` = m

Since, m = 3

∴ `(dy)/(dx)` = 3, which is the required equation.

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2021-2022 (March) Set 1

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