Mathematics - Differential Equation Question with Solution | TestHub

MathematicsDifferential EquationExact DEMedium2 minPYQ_2021
MathematicsMediumnumerical range

If the curve,y=yxrepresented by the solution of the differential equation2xy2-ydx+x dy=0, passes through the intersection of the lines,2x-3y=1and3x+2y=8, then|y1|is equal to ___ .

Answer:
1.00
Solution:

2xy2-ydx+xdy=0

2xy2dx-ydx+xdy=0

2xdx=ydx-xdyy2=dxy

Now integrate

x2=xy+c

Now point of intersection of lines are 2,1.

4=21+c  c=2

x2=xy+2

Now y1=-1

|y1|=1

Stream:JEESubject:MathematicsTopic:Differential EquationSubtopic:Exact DE
2mℹ️ Source: PYQ_2021

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