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Question
यदि `int (3ax)/(b^2 + c^2x^2) dx = A log |b^2 + c^2x^2| + K` है, तो A का मान है:
Options
3a
`(3a)/(2b^2)`
`(3a)/(b^2c^2)`
`(3a)/(2c^2)`
MCQ
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Solution
`bb((3a)/(2c^2))`
स्पष्टीकरण:
मान लें `int (3ax)/(b^2 + c^2x^2)dx`
मान लें u = b2 + c2x2, तब du = 2c2x dx
और फिर,
I = `(3a)/(2c^2) int (du)/u`
I = `(3a)/(2c^2) log |b^2 + c^2x^2| + K`
इसलिए, A = `(3a)/(2c^2)`।
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