yz/x2 + y2 dx – xz/x2+y2 dy – tan-1 y/x dz = 0

yz/x2 + y2 dx – xz/x2+y2 dy – tan-1 y/x dz = 0




solve yz/x2 + y2 dx – xz/x2+y2 dy – tan-1 y/x dz = 0





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