read code and make summer ==标题==:语法==标题==:类的定义==标题==:继承==标题==:多态==标题==:__all__ = [create_dataset, create_dataloader]==标题==:yield==标题==: f-string(格式化字符串)==标题==:getattr()==标题==:logging==标题==:seed==标题==:slice…
计算积分 I ∫ R e − t 4 d t . I\int_{\mathbb{R}} e^{-t^4} dt. I∫Re−t4dt.
解:令 x t 4 xt^4 xt4. 则 I 2 ∫ 0 ∞ e − x ⋅ 1 4 ⋅ x − 3 / 4 d x 1 2 Γ ( 1 4 ) I 2\int_0^\infty e^{-x} \cdot \frac{1}{4}\cdot x^{-3/4} dx\frac{1}{2} \Gamma(…