Calculating The Sum Of A Sequence - Casio ClassPad 330 User Manual

Example: To obtain the
b
n+
1

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.
Example: To calculate the sum of the general term expression
range of 2 <
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
], {, 2, +, 2, [
[ , n ], [
(3) Press E.
Tip
• For information about the syntax of the "Σ" function, see "2-8 Using the Action Menu".
Recursive and Explicit Form of a Sequence
n
-th terms of a system of recursion formulas
a b
= n + 3 n with the initial conditions
n
< 10
n a
, n
6-3-6
a b
=2, = 1
1 1
n a n
], e , 2, f , 1, 0, e ,
, n ], [
n
], -, 1.
], [
20060301
a a b
n+ = 3 n + n ,
1
a n n
2
n E = + 2 – 1 in the