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Sums Of A Sequence
Sums Of A Sequence
n

T1  T2  T3    Tn  S n   Tk
k 1
Sums Of A Sequence
n

T1  T2  T3    Tn  S n   Tk
k 1

5

e.g. i  2n  3
n1
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
n1
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
n1

 45
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
n1

 45

ii  If S10  29 and S11  37, find T11
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
n1

 45

ii  If S10  29 and S11  37, find T11
T11  S11  S10
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
n1

 45

ii  If S10  29 and S11  37, find T11
T11  S11  S10

 37  29
8
iii  If Sn  5n 2  2, find Tn
iii  If Sn  5n 2  2, find Tn
Tn  S n  S n1
iii  If Sn  5n 2  2, find Tn
Tn  S n  S n1



 5n 2  2  5n  1  2
2


iii  If Sn  5n 2  2, find Tn
Tn  S n  S n1



 5n 2  2  5n  1  2
2



 5n 2  2  5n 2  10n  5  2
 10n  5
iii  If Sn  5n 2  2, find Tn
Tn  S n  S n1



 5n 2  2  5n  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

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  • 1. Sums Of A Sequence
  • 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 n1
  • 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 n1
  • 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 n1  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 n1  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 n1  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 n1  45 ii  If S10  29 and S11  37, find T11 T11  S11  S10  37  29 8
  • 9. iii  If Sn  5n 2  2, find Tn
  • 10. iii  If Sn  5n 2  2, find Tn Tn  S n  S n1
  • 11. iii  If Sn  5n 2  2, find Tn Tn  S n  S n1   5n 2  2  5n  1  2 2 
  • 12. iii  If Sn  5n 2  2, find Tn Tn  S n  S n1   5n 2  2  5n  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 n1   5n 2  2  5n  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