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積分因數為exp(∫-2/(1-x^2)dx)=(x-1)/(x+1)微分方程兩邊同時乘(x-1)/(x+1),得(x-1)/(x+1)*y'+2*y/(x+1)^2=x-1即((x-1)/(x+1)*y)'=x-1兩邊積分並結合初始條件得(x-1)/(x+1)*y=1/2 *x^2-x則y=1/2*x*(x-2)*(x+1)/(x-1…
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