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Question: no output despite simple diffeq

Question:no output despite simple diffeq

maxwell 25
dsolve
January 29 2017
2

I get no output from the following

deqv := m*v(s)*(diff(v(s), s)) = m*g-k*v(s)^2

I have to write

solv := `assuming`([dsolve({deqv, v(0) = v__0}, v(s), implicit)], [v__0 > 0])

in order to get

-g*m/k-exp(-2*k*s/m)*(-g*m/k+v__0^2)+v(s)^2 = 0

and then I have to write my own function

It should be a piece of cake for maple to solve this!

Staffan

 


 

 

 

 

 
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