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Integral Calculus

Cool goIITian

Joined:	23 Sep 2008
Post:	74

8 Oct 2009 15:17:30 IST

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DIFFERENTIAL EQUATION [only for eexpertts...beginners may keep away]

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kabi

Blazing goIITian

Joined: 11 Jan 2009

Posts: 575

9 Oct 2009 17:20:00 IST

Like 1 people liked this

thanks for rewriting it again .

differentiate it u will get

lamda = - ( xb² +a² y y ' ) /( x+ y' )

put this in the original question

u will get

(x +y y') (xy' -y ) = (a² -b² )y'

to find the orthogonal curve we actually exchange dy/dx by -dx/dy

and integrate it

by applying this here

u will again get the same original curve .

thank u

Rohit Agarwal

Cool goIITian

Joined: 23 Sep 2008

Posts: 74

9 Oct 2009 22:34:05 IST

Like 0 people liked this

uum.ok..i will try..thanx dude....:)

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