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nubeer
Group Title
Calc 3... how do we find the integration factor of equation which is not exact.. (i want to know for in which both x and y is used as integration factor)
 2 years ago
 2 years ago
nubeer Group Title
Calc 3... how do we find the integration factor of equation which is not exact.. (i want to know for in which both x and y is used as integration factor)
 2 years ago
 2 years ago

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UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
do you have an example we can work through /
 2 years ago

nubeer Group TitleBest ResponseYou've already chosen the best response.0
hmm no i don't have any example .. we were asked to look for it.. i just want to know any general method.. any link or inofrmation would appreciate it.. its basically part of diffrential equations.
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
\[\left(3x+\frac 6y\right)\text dx+\left(\frac {x^2}{y}+\frac{3y}{x}\right)\text dy =0\]
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
\[\frac{\partial M}{\partial y}=\frac {6}{y^{2}}\qquad\qquad \frac{\partial N}{\partial x}=\frac{2x}{y}\frac{3y}{x^2}\]\[\qquad\qquad\frac{\partial M}{\partial y}\neq \frac{\partial N}{\partial x}\]
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
\[R=R(x,y)=x^my^n\]
 2 years ago

nubeer Group TitleBest ResponseYou've already chosen the best response.0
ok this is soemthing new.. is this the general form of the solution?
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
im using R for the integrating factor
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
\[\frac{\partial R(x,y)M}{\partial y}\quad= \frac{\partial R(x,y)N}{\partial x}\] using the product rule \[R_y(x,y)M+R(x,y)\frac{\partial M}{\partial y}=R_x(x,y)N+R(x,y)\frac{\partial N}{\partial x}\]
 2 years ago

nubeer Group TitleBest ResponseYou've already chosen the best response.0
ok i get this much
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
\[\small R_y(x,y)\left(3x+\frac 6y\right)+R(x,y)\left(\frac {6}{y^{2}}\right)=R_x(x,y)\left(\frac {x^2}{y}+\frac{3y}{x}\right)+R(x,y)\left(\frac{2x}{y}\frac{3y}{x^2}\right)\] \[\small nx^my^{n1}\left(3x+\frac 6y\right)+x^my^n\left(\frac {6}{y^{2}}\frac{2x}{y}+\frac{3y}{x^2}\right)mx^{m1}y^n\left(\frac {x^2}{y}+\frac{3y}{x}\right)=0\]
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
.... somehow find n and m ,
 2 years ago

nubeer Group TitleBest ResponseYou've already chosen the best response.0
how? any particular method?
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
something to do with the matching indices
 2 years ago

nubeer Group TitleBest ResponseYou've already chosen the best response.0
hmm still dont get the last part..
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
me either
 2 years ago

nubeer Group TitleBest ResponseYou've already chosen the best response.0
hmm ok its fine but thanks for the help bro.. :) will look on internet
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
if you find a really good sight can you tell me please
 2 years ago

nubeer Group TitleBest ResponseYou've already chosen the best response.0
sure i will let u know..
 2 years ago

nubeer Group TitleBest ResponseYou've already chosen the best response.0
http://www.cliffsnotes.com/study_guide/IntegratingFactors.topicArticleId19736,articleId19711.html @UnkleRhaukus this is a good one but it dont tell for the both x and y .. will post it if i find it
 2 years ago
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