Exploration And Investigation - Casio fx-350MS Booklet

Exploration and
2
Investigation
One way of generating sequence of numbers is by using the
generate a sequence with general term
Procedure
1 . Make sure your calculator is in COMP mode. Then key in the following:
3 Ans
(
What do you see ? Our display screen is as shown on the right.
Your display screen may look different. Why ?
2 . Now, press
1
once to return to the previous screen as shown on right.
(
Remember, your display screen may look different!
=
3 . Press
once. We will get the display as shown on right.
4 . Continue on with
Then
and
Finally
Therefore, we have generated the following sequence of numbers: 6, 15, 30, 51, 78.
Try and design another way to generate the above sequence of numbers using your fx -
350MS.
Sequence of Numbers
2 +
( 3 n ) 1 , for
2
x + 1
=
followed by pressing the replay key
= =
2
= =
3
= =
4
= =
5
Ans
key. Suppose we want to
=
n 1 2 , 3 , 4 , 5 , .
followed by
)
3(Ans
3(Ans
)
3(Ans
3(Ans
3(Ans
3(Ans
3(Ans
2 +
( 3 Ans ) 1
=
2
+1)
678
2
+1)
678
2
+1)
6
2
+1)
15
2
+1)
30
2
+1)
51
2
+1)
78
18