Consider the d.e. (x - 2y)dx + ydy = 0. Q7.1 The d.e. can be solved by the substitution (select one) u = xy u = Y x u = x - 2y u = y It cannot be solved by a substitution. Q7.2 The solution to the d.e. is (select one) x In(y - x) C y-x x In(y - x) + C y - x In(x)+ln(yx) = C y - x In (9 х 2 ) = C None of the above Submit & View Submission >

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