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Quiz 4\quad Feb.~16/18, 1993\cr
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1. Find the general solution to the differential equation $$(x-1)y'
+ {2x\over x+1} y = {1\over x+1}$$

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2.Determine the interval on which the solution to the initial value problem
$$y' + y^2 = 0, \quad y(0) = 1$$ is defined.

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