First slide

Equation of line in Straight lines

Question

$The lengths of the perpendicular from the points (m^{2}, 2 m), (m m^{'}, m + m^{'}) and (m^{' 2}, 2 m^{'}) to the line x + y + 1 = 0 form$

Easy

A

an A.P
B

a G.P.
C

an H.P
D

None of these

Solution

$\begin{array}{l} p_{1} = \frac{m^{2} + 2 m + 1}{\sqrt{2}} = \frac{(m + 1)^{2}}{\sqrt{2}} \\ p_{2} = \frac{m m^{'} + m + m^{'} + 1}{\sqrt{2}} = \frac{(m^{'} + 1) (m + 1)}{\sqrt{2}} \\ p_{3} = \frac{m^{' 2} + 2 m^{'} + 1}{\sqrt{2}} = \frac{{(m^{'} + 1)}^{2}}{\sqrt{2}} \end{array}$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App