𝐿=1
2𝑎(𝑞) ሶ𝑞2−𝑈(𝑞)
𝐿=𝑚 ሶ𝑥2
2−𝑈(𝑥)
𝑡= 𝑚
2න𝑑𝑥
𝐸−𝑈(𝑥)+𝑐𝑜𝑛𝑠𝑡
𝐸=𝑚 ሶ𝑥2
2+𝑈(𝑥)=𝑐𝑜𝑛𝑠𝑡
𝑇𝐸 =2𝑡=2𝑚 න
𝑥1(𝐸)
𝑥2(𝐸) 𝑑𝑥
𝐸−𝑈(𝑥)
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Giấy phép Mạng Xã Hội số: 38/GP-BVHTTDL cấp ngày 09/3/2026