[Toán 12] Tìm nguyên hàm: $I = \int \dfrac{dx }{ x^3 - 2x^2}$

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nguyenbahiep1

[TEX]I = \int_{}^{}\frac{dx}{x^3-2x^2} = \int_{}^{}\frac{dx}{x^2(x-2)} \\ I = \frac{1}{4}\int_{}^{}(\frac{1}{x-2} - \frac{x+2}{x^2})dx \\ I = \frac{1}{4}\int_{}^{}(\frac{1}{x-2} - \frac{1}{x} -\frac{2}{x^2} )dx \\I = \frac{1}{4}ln|x-2| - \frac{1}{4}.ln|x| + \frac{1}{2}.\frac{1}{x} + C[/TEX]
 
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