引用:
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作者TW_Mike
抱歉忘了檢查
(x^2) / ((x^2) - a)
= ((x^2) - a) / ((x^2) - a) + a / ((x^2) - a)
= 1 + 0.5 * (a^0.5) / (x - (a^0.5)) - 0.5 * (a^0.5) / (x + (a^0.5))
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=1+0.5*a^0.5(1/(x - (a^0.5))-1/(x + (a^0.5)))
integral
=x+0.5*a^0.5(ln|x-(a^0.5)|-ln|x+(a^0.5)|)+C
=x+0.5*a^0.5ln|(x-(a^0.5))/(x+(a^0.5))|+C
