Result from solve() command shows c_0

[parisse]

@jfdHP: Indeed! On a computer (or a server), you can add more checks without fearing bad side-effects like on a calculator. And Wolfram has much more programmers to implement special code for specific inputs like that...

@lrdheat: for efficiency reasons, the first step in a limit computation (without discontinuous fonctions like floor) is substitution, if the answer is not undef or unsigned inf, then it is considered to be correct. ln(0) is -infinity, therefore it is returned without further computation, and one could argue that, since ln(x) for x negative is ln(-x)+i*pi, the limit *is* correct.