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Re: solve differential equation problem


Hi,

can you explain your problem by an example ?
that is *not* solved by Mathematica *and*
produce the error message below ??

Regards
   Jens

elvis wrote:
> Here we often use mathematica to solve differential equations, when I
> encouter a equation with several constrains I set them to those values.
> But it cannot solve it and have the following warnings:
> 
>     DSolve::deqx: Supplied equations are not differential equations of
> the given functions.
> 
> Give a very simple differential equation here:
> 
>   DSolve[{y'[x] == r*y[x], y[0] == a}, y, x]
> 
> Can anyone help to "solve" this problem for me?
> Thanks!
> 


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