Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
Question

determine whether the given differential equation 
is exact. If it is exact, solve it. (please solve both 

9)  (x- y^3 +y^2 sin x) dx = (3xy^2 + 2y cos x) dy

11) (y ln y-e^-xy)dx+(1/y+xlny)dy=0

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