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التكامل بالكسور الجزئية: Mathematics Tawjihi question with answer

A Tawjihi Mathematics question (التكامل) with the answer and worked steps.

From the Tawjihi question bank: Mathematics · التكامل

أجد التكامل: 8x219x+1(2x+1)(x2)2dx\int \frac{8x^2 - 19x + 1}{(2x + 1)(x - 2)^2} dx.

التكامل بالكسور الجزئية

The answer

الصورة الجزئية هي A2x+1+Bx2+C(x2)2\frac{A}{2x+1}+\frac{B}{x-2}+\frac{C}{(x-2)^2}. بحل الثوابت نحصل على A=2,B=3,C=1A=2, B=3, C=-1، لذلك integrand يساوي 22x+1+3x21(x2)2\frac{2}{2x+1}+\frac{3}{x-2}-\frac{1}{(x-2)^2}. التكامل ln2x+1+3lnx2+1x2+C\ln|2x+1|+3\ln|x-2|+\frac{1}{x-2}+C.

Explanation

سؤال مراجعة ثقيل على عامل خطي مكرر مع عامل خطي آخر.

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