Updates:
Status: Fixed
Comment #10 on issue 983 by [email protected]: improvement to solve()
http://code.google.com/p/sympy/issues/detail?id=983
I,v,V = symbols('I v V')
i = I*(exp(v/V) - 1)
k = i.diff(v,2)/(1 + (i.diff(v))**2)**Rational(3,2)
dk = k.diff(v)
solve(dk, v)
[zoo*V, V*log(-sqrt(2)*V/(2*I)), V*log(sqrt(2)*V/(2*I)), V*log(-I*V/I),
V*log(I*V/I)]
I,v,V = symbols('I v V', real=True)
i = I*(exp(v/V) - 1)
k = i.diff(v,2)/(1 + (i.diff(v))**2)**Rational(3,2)
dk = k.diff(v)
solve(dk, v)
[zoo*V, V*log(-sqrt(2)*V/(2*I)), V*log(sqrt(2)*V/(2*I))]
Looks the same as sage in the current master except that V*zoo is obtained
rather than e*(v/V) == 0. So I'll close this.
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