#2767 powereries of some log expressions

None
closed
nobody
None
5
2014-07-29
2014-06-25
No

Wrong: log(x+2) doesn't vanish for x = 0, but the powerseries does

(%i4) powerseries(log(x+2),x,0);
(%o4) sum((2^(-i4-1)*(-1)^i4*x^(i4+1))/(i4+1),i4,0,inf)

OK:

(%i2) powerseries(log(x+1),x,0);
(%o2) -sum(((-1)^i2*x^i2)/i2,i2,1,inf)

Related

Bugs: #2335

Discussion

  • Rupert Swarbrick

    • status: open --> closed
     

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