HP 113397 hp 9g_user's manual_English_E_HDP1SG18ES1.pdf - Page 77
Example 57
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(2) A = 3 , D = 2, N = 12 [ ] ( 5 Seconds ) S (N) = S (12) = 168 2 [ ] 3 [ ] 2 [ ] 12 [ ] Example 57 Create a program to generate a common ratio sequence ( A : First item, R : common ratio, N : number ) Sum : S ( N ) = A + AR + AR 2 + AR3.... 1) R 1 2) R = 1 A ( N ) = AR ( N - 1 ) Nth item : A ( N ) = A ( N - 1 ) E-77
E-77
(2) A = 3 , D = 2, N = 12
S (N) = S (12) = 168
[
] ( 5 Seconds )
2 [
] 3 [
]
2 [
] 12
[
]
Example 57
±
Create a program to generate a common ratio sequence ( A : First item,
R : common ratio, N : number )
Sum : S ( N ) = A + AR + AR
2
+ AR
3
....
1) R
1
2) R = 1
A ( N ) = AR
( N –
1 )
Nth item : A ( N ) = A
( N –
1 )