Question
Download Solution PDF\(\int \frac {x^2}{x^2 - 3x + 2}dx\) का मान ___________ होगा, जहां c एक स्वेच्छ स्थिरांक है।
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFसंकल्पना:
∫ 1 dx = x + स्थिरांक
\(\int\frac{1}{x}dx=log\ x+constant\)
गणना:
दिया हुआ:
माना कि, \(I=∫ \frac {x^2}{x^2 - 3x + 2}dx\)
\(I= ∫ (1+\frac{3x-2}{x^2-3x+2})dx\)
\(I= ∫ 1dx+∫\frac{3x+2}{x^2-3x-2}dx\) ..... (i)
\(\frac{3x-2}{x^2-3x+2}=\frac{3x-2}{(x-2)(x-1)}=\frac{A}{(x-2)}+\frac{B}{(x-1)}\) .... (ii)
(3x - 2) = A (x - 1) + B (x - 2)
x = 1 के लिए
(3 (1) - 2) = B (1 - 2)
B = -1
x = 2 के लिए
(3 (2) - 2) = A (2 - 1)
A = 4
समीकरण (ii) से
\(\frac{3x-2}{x^2-3x+2}=\frac{4}{(x-2)}-\frac{1}{(x-1)}\)
अब समीकरण (i) से
\(I= ∫ 1dx+∫\frac{4}{(x-2)}dx-∫\frac{1}{(x-1)}dx\)
x - log |x - 1| + 4 log |x - 2| + c
जहाँ c एक मनमाना स्थिरांक है।
Last updated on Jul 16, 2025
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