題組內容
2. Apply that $\int_0^\infty e^{-x^2} dx = \frac{\sqrt{\pi}}{2}$ to evaluate the following improper integrals.
(b) \( (8\%) \) \( \int_0^\infty x^{\frac{3}{2}}e^{-x}dx \)
2. Apply that $\int_0^\infty e^{-x^2} dx = \frac{\sqrt{\pi}}{2}$ to evaluate the following improper integrals.
(b) \( (8\%) \) \( \int_0^\infty x^{\frac{3}{2}}e^{-x}dx \)