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Mathematics
OpenStudy (bahrom7893):

I really need help with this homework problem, the topic is differential equations: Solve the D.E. dy/dx = ( x - y - 1 ) / ( x + y + 3 ), by finding h and k so that the substitutions x = u + h and y = v + k transform it into a homogeneous equation dv / du = ( u - v ) / ( u + v )

OpenStudy (bahrom7893):

I do remember solving this, not sure whether I have the solution now.

OpenStudy (openstudyuser):

The solution is... I dunno.

OpenStudy (bahrom7893):

Asked on Sun, Feb 20, 2011, 10:19:25 GMT-0500 (Eastern Standard Time)

OpenStudy (openstudyuser):

That was like a zillion years ago, lol.

OpenStudy (anonymous):

YESS YESS I GOT IT!!!!!

OpenStudy (bahrom7893):

GOOD JOB!!!!!

OpenStudy (bahrom7893):

let me see if i still have my ODE notes somewhere.... man I'll find them later

OpenStudy (anonymous):

Anyway the answer is...

OpenStudy (anonymous):

\[\Large x^{2}-y^{2}-2xy-6y=c\]

OpenStudy (bahrom7893):

Good job! That probably is the right answer.. Someone give him a medal

OpenStudy (anonymous):

Thank goodness! That means that my senior year of high school was not a complete waste of time!

OpenStudy (anonymous):

That makes me wanna revise all the awesome math & physics that i learnt these last few years. Thanks, Bahrom, thank you..

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