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Evaluate Each of the Following Integral: ∫ 1 0 X E X 2 D X

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प्रश्न

Evaluate each of the following  integral:

\[\int_0^1 x e^{x^2} dx\]

 

योग
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उत्तर

\[I = \int_0^1 x e^{x^2} dx\]
\[ = \frac{1}{2} \int_0^1 e^{x^2} 2xdx\]

Put \[x^2 = z\]

\[\Rightarrow 2x\ dx = dz\]

When \[x \to 0, z \to 0\]

When \[x \to 1, z \to 1\]

\[\therefore I = \frac{1}{2} \int_0^1 e^z dz\]
\[ = \frac{1}{2} \left.\times {e^z}\right|_0^1 \]
\[ = \frac{1}{2}\left( e - e^0 \right)\]
\[ = \frac{1}{2}\left( e - 1 \right)\]

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अध्याय 19: Definite Integrals - Very Short Answers [पृष्ठ ११५]

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आर.डी. शर्मा Mathematics Volume 1 and 2 [English] Class 12
अध्याय 19 Definite Integrals
Very Short Answers | Q 26 | पृष्ठ ११५

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