Solve 1st Order ODE: Need Help | Math Forum

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The discussion centers around the notation used in first-order ordinary differential equations (ODEs), specifically the terms d_t(u), du/dt, and u̇ (u with a dot above it). Participants clarify that these notations are interchangeable and represent the same mathematical concept of the derivative of u with respect to time t. Understanding this notation is crucial for solving first-order ODEs effectively.

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[PLAIN]http://img440.imageshack.us/img440/7352/11unled.jpg

Having some trouble. I am not sure what d_t(u) and :u(with the . above it) means. Would appreciate some help. Thanks
 
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He is just telling you that du/dt and dtu and udot all mean the same thing. Use whichever notation floats your boat.
 

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