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Consider \( I_{1}=\int_{0}^{1} e^{-x} \cos ^{2} x d x, I_{2}=\int_{0}^{1} e^{-x^{2}} \)
\( \mathrm{P}^{20: 5} \)
W.
\( \cos ^{2} x d x \cdot I_{3}=\int_{0}^{1} e^{\frac{-x^{2}}{2}} \cos ^{2} x d x, I_{4}=\int_{0}^{1} e^{\frac{-x^{2}}{2}} d x \), the correct sequence is:
(1) \( I_{2}I_{4}I_{1}I_{3} \)
(2) \( I_{2}I_{4}I_{1}I_{3} \)
(3) \( I_{1}I_{2}I_{3}I_{4} \)
(4) \( I_{1}I_{2}I_{3}I_{4} \)
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