Wednesday, January 27, 2016

Differentiate the equation y+ xy = 2x+y^2 and find dy/dx

Given the equation:


y + xy =
2x + y^2


We will use implicit differentiation to find
dy/dx


We will differentiate with respect to
x.


==> y' + ( x'*y + x*y') = 2 +
2yy'


==> y' + y + xy' = 2+
2yy'


Now we will group all terms with y' on one
side.


==> y' + xy' -2yy' = 2
-y


Now we will factor
y'.


==> y'(1 + x -2y) =
(2-y)


Now we will divide by
(1+x-2y)


==> y' =
(2-y)/(1+x-2y)


Then the values of dy/dx =
(2-y)/(1+x-2y)

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