討論串[考古] 高大96
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x + 4 A B C. 令 ------------- = --- + ----- + -----. (x)(x-2)(x+5) x x - 2 x + 5. 則 x + 4 = (A)(x-2)(x+5) + (B)(x)(x+5) + (C)(x)(x-2). = (A + B + C)(x^
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7.Find (b) ∫(x+4) / x(x-2)(x+5) dx. 算出來是 -2lnx/3 + 3ln(x-2)/5 + ln(x+3)/15. 答案對嗎？...不太會這種類型的題目@@. 5.(a) Find the volume of the solid generated by revo
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-p(x). η(x) = ------------- , p(x) = (37)*(x^(-1/η)). (x)*(p(x)). -(37)*(x^(-1/η)). = -----------------------------------. (x)*(37)*(-1/η)*(x^((-1/η)-
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dx. ---- = r*x , x(0) = P. dt. dx. ---- = r dt. x. ln(x) = r*t + c. t = 0 , x = P 代入上式. ln(P) = 0 + c = c. ln(x) = r*t + ln(P) = ln((P)(e^(r*t))). x =
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