MHB Looking at a solitary initial state

simo1
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I have this equation

u0(x) = a0x2(1-x)2 for 0≤ x ≤ 1
= 0 for x>1
i have to investigate how will a solitary initial state such as the one above deform as time goes on.

I know it will not deform if c is constant. when they say I must do this by a well-lnown method and produce video frmaes, could you suggest which methods to use
 
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We need a lot more context to help you out, I think.

1. Where is the differential equation? All I see here is a function definition.

2. In what context does this differential equation arise? Can you give us the initial problem?

3. What is $c$?
 
I have the equation ##F^x=m\frac {d}{dt}(\gamma v^x)##, where ##\gamma## is the Lorentz factor, and ##x## is a superscript, not an exponent. In my textbook the solution is given as ##\frac {F^x}{m}t=\frac {v^x}{\sqrt {1-v^{x^2}/c^2}}##. What bothers me is, when I separate the variables I get ##\frac {F^x}{m}dt=d(\gamma v^x)##. Can I simply consider ##d(\gamma v^x)## the variable of integration without any further considerations? Can I simply make the substitution ##\gamma v^x = u## and then...

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