parabola

The least dist. b/n y2=4ax and (y-ba)2=-4ax is 8√5a,where b is posiive. The value of b is_?

8 Answers

11
Anirudh Narayanan ·

General point on first curve is (y2/4a,y) and general point on first is (-[y-ba]2/4a,y). Find distance between them and minimize it [1]. Long method but correct i hope.

33
Abhishek Priyam ·

Least distance should be along common normal... that will be little short method... i think

1
skygirl ·

yes exactly ... least distance is along the common normal..

62
Lokesh Verma ·

Is it necessary for 2 curves to have a common normal?/

Take x asix and y axis!

11
Subash ·

wouldnt the common normal be z axis in that case

1
skygirl ·

but the x and axis are intersecting... then there least dist is zero...
i mean for any two curves which are intersceting,,, the lesat dist between them is zero.. (b/w y not negative :P)

1
voldy ·

distance is always positive no???

1
skygirl ·

are yes :)

was kidding

but

nishant bhaiyaaaaaaaaaaaaaaaa ......... arey reply ......... ????????????????????

Your Answer

Close [X]