Casio 300 PLUS Manual De Usuario
20050501
Calculating the Sum of a Sequence
Perform the following steps when you want to determine the sum of a specific range of the
sequence of a recursion expression or a general term expression.
sequence of a recursion expression or a general term expression.
Example:
To calculate the sum of the general term expression
a
n
E =
n
2
+ 2
n
– 1 in the
range of 2 <
n
< 10
u ClassPad Operation
(1) Start up the Sequence Editor.
• If you have another application running, tap
m and then H.
• If you have the Sequence application running, tap
O and then [Sequence Editor].
(2) Tap (or press)
O, [Sequence RUN], [Calc], [Σ], [
n
,
a
n
], [
n
],
{, 2, +, 2, [
n
,
a
n
],
[
n
],
-, 1, ,, [
n
,
a
n
], [
n
],
,, 2, ,, 1, 0, and then ).
(3) Press
E.
Tip
• For information about the syntax of the “
Σ” function, see “2-7 Using the Action Menu”.
6-3-6
Recursive and Explicit Form of a Sequence