The solution of the differential equation xdydx=y+xey/x is
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a
e−y/x+logx=c
b
ex/y+logy=c
c
logyx+exy=c
d
none
answer is A.
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Detailed Solution
The given equation can be written as⇒dydx=yx+ey/x put y=vx then dydx=v+xdvdxv+xdvdx=v+ev ⇒∫e−vdv=∫dxx by variables separable⇒−e−v+c=logx⇒e−y/x+logx=c