GLNI_shonenjump
Junior Member
sách viết : nếu denta N/denta t là vô cùng bé thì ta có:
1/N . dN/dt = r
Cho mình hỏi dN, dt là gì ?
thanks
1/N . dN/dt = r
Cho mình hỏi dN, dt là gì ?
thanks
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