1.

Solution of the differential equation (1 + 3y)dy - (1 - 3y)dx = 0, y(1) = 0 is

A. x + y + 3xy = 1
B. x - y + 3xy = 1
C. x - y - 3xy = 1
D. x + y - 3xy = 1
Answer» D. x + y - 3xy = 1


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