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JEE Mains · Maths · STD 12 - 7.2 definite integral

माना \(f: R \rightarrow R , f( x )= e ^{- x } \sin x\) द्वारा परिभाषित है। यदि \(F :[0,1] \rightarrow R\) एक अवकलनीय फलन है जिसके लिए \(F ( x )=\int \limits_{0}^{ x } f( t ) dt\) है, तो \(\int \limits_{0}^{1}\left( F ^{\prime}( x )+f( x )\right) e ^{ x } dx\) का मान निम्न में से किस अंतराल में है ?

  1. A \(\left[\frac{327}{360}, \frac{329}{360}\right]\)
  2. B \(\left[\frac{330}{360}, \frac{331}{360}\right]\)
  3. C \(\left[\frac{331}{360}, \frac{334}{360}\right]\)
  4. D \(\left[\frac{335}{360}, \frac{336}{360}\right]\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(\left[\frac{330}{360}, \frac{331}{360}\right]\)

Step-by-step Solution

Detailed explanation

\(f ( x )= e ^{- x } \sin x\) Now, \(F ( x )=\int_{0}^{ x } f ( t ) d t \quad \Rightarrow F ^{\prime}( x )= f ( x )\) \(I =\int_{0}^{1}\left( F ^{\prime}( x )+ f ( x )\right) e ^{ x } dx =\int_{0}^{1}( f ( x )+ f ( x )) \cdot e ^{ x } dx\)…
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