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फलन का समाकलन कीजिए। 1(x-a)(x-b) - Mathematics (गणित)

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Question

फलन का समाकलन कीजिए।

`1/sqrt((x - a) (x - b))`

Sum

Solution

माना `I = int dx/sqrt((x - a) (x - b))`

`= int dx/sqrt(x^2 - (a + b)x + ab)`

`= int dx/{[x^2 - 2  ((a + b)/2)  x + ((a + b)/2)^2] + ab - ((a + b)/2)^2`

`= int dx/sqrt((x - (a + b)/2)^2 - ((a - b)/2)^2)`

`= log [(x - (a + b)/2) + sqrt((x - (a + b)/2)^2 - ((a - b)/2)^2)] + C`          `...[∵ int dx/ sqrt (x^2 - a^2) = log |x + sqrt (x^2 - a^2)| + C]`

`= log [x - (a + b)/2 + sqrt((x - a)(x - b))] + C`

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कुछ विशिष्ट फलनों के समाकलन
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Chapter 7: समाकलन - प्रश्नावली 7.4 [Page 332]

APPEARS IN

NCERT Mathematics - Part 1 and 2 [Hindi] Class 12
Chapter 7 समाकलन
प्रश्नावली 7.4 | Q 15. | Page 332
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