填空题
(x-1)y″-xy′+y=0
A.(-3/4)(1-x2)3/2+C B.(-1/3)(1-x2)3/2+C C.(3/4)(1-x2)2/3+C D.(2/3)(1-x2)2/3+C
A.(f(x2))/2+C B.(f2(x2))/2+C C.(f2(x2))/4+C D.(x2f2(x2))/4+C
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