A general piece of advice when learning *any* new piece of software: start
with simple, even trivial, cases to make sure they work the way you expect
before trying bigger, more complicated, cases. In this case, trying
Cos(0.1), say, would have shown that Maxima doesn't use Cos for the cosine
function. On the other hand, cos(0.1) evaluates to 0.995.
-s
On Fri, Sep 21, 2012 at 12:55 AM, Rajib & Susmita Bandopadhyay <
bkpsusmitaa at gmail.com> wrote:
> F_1 (x):= sum(Cos(x+0.09*n*x),n,-10,10);