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11X1 T14 04 sums of a sequence (2010)
- 2. Sums Of A Sequence
n
T1 T2 T3 Tn S n Tk
k 1
- 3. Sums Of A Sequence
n
T1 T2 T3 Tn S n Tk
k 1
5
e.g. i 2n 3
n1
- 4. Sums Of A Sequence
n
T1 T2 T3 Tn S n Tk
k 1
5
e.g. i 2n 3 2 3 4 3 6 3 8 3 10 3
n1
- 5. Sums Of A Sequence
n
T1 T2 T3 Tn S n Tk
k 1
5
e.g. i 2n 3 2 3 4 3 6 3 8 3 10 3
n1
45
- 6. Sums Of A Sequence
n
T1 T2 T3 Tn S n Tk
k 1
5
e.g. i 2n 3 2 3 4 3 6 3 8 3 10 3
n1
45
ii If S10 29 and S11 37, find T11
- 7. Sums Of A Sequence
n
T1 T2 T3 Tn S n Tk
k 1
5
e.g. i 2n 3 2 3 4 3 6 3 8 3 10 3
n1
45
ii If S10 29 and S11 37, find T11
T11 S11 S10
- 8. Sums Of A Sequence
n
T1 T2 T3 Tn S n Tk
k 1
5
e.g. i 2n 3 2 3 4 3 6 3 8 3 10 3
n1
45
ii If S10 29 and S11 37, find T11
T11 S11 S10
37 29
8
- 10. iii If Sn 5n 2 2, find Tn
Tn S n S n1
- 11. iii If Sn 5n 2 2, find Tn
Tn S n S n1
5n 2 2 5n 1 2
2
- 12. iii If Sn 5n 2 2, find Tn
Tn S n S n1
5n 2 2 5n 1 2
2
5n 2 2 5n 2 10n 5 2
10n 5
- 13. iii If Sn 5n 2 2, find Tn
Tn S n S n1
5n 2 2 5n 1 2
2
5n 2 2 5n 2 10n 5 2
10n 5
Exercise 6G; 1ace etc, 2bdf etc, 4
Exercise 6H; 3, 4b, 8ace etc