|Apr23-12, 06:39 PM||#1|
Sum of series in Ti-89
Hey, I'm having trouble with plugging sum series into my Ti-89, and was wondering how to do it with things converging and going to infinity. I have the sums rounded to 3 decimal places that my professor gave me, however, I can't figure out how to get it from the calculator. For example I have,
On the worksheet it says assume each summation goes from 1 to infinity. It doesn't give me my step size, so I'm assuming it's one?
I know the command is:
sum(seq(function, variable, start, stop, step size))
and so I have:
and it's telling me that I have a domain error.
So I tried different stops such as stuff lower than 100 and it works. So my question is how do I get the sum from 1 to infinity? Do I have to improvise and use finite stops (for example 50, etc.)? And then interpret the answer to find the real sum?
|Apr23-12, 06:44 PM||#2|
or if I do:
without giving me the answer (even if I hit diamond).
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