Re: how to write sqrt(cos(x)) in series form?

Ioannis a écrit :
<math.idiot@xxxxxxxxx> wrote in message
news:1174523407.256479.88640@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
hi

how to write sqrt(cos(x)) in series form? thanks.
Just give me the answer and I will check with Maple.
No joking around, please.

You know, we are not on the job automatons here, where you just push a couple
of buttons and you automatically get the answer you want here, after we GUESS
what you want from smelling our finger-nails. If the answer is what you want,
then *SPECIFY* it. Most professional mathematicians here when asked "what's
the SERIES of ...." or "CAN THE FUNCTION cos(x) be written IN SERIES form",
automatically assume that one wants a general expression.

If you wanted only a few of the terms, you should have said so: "What is the
series for cos(x)^2 UP TO n TERMS"? Or "WHAT IS AN APPROXIMATION for the
series for cos(x)"?

Asking for THE series for cos(x) you are asking for trouble.

Not mentioning the fact that the "and I will check it with Maple" ridiculize the whole thing
.

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