IP1U7 7.3 PN1 Q1
IP1U7 7.3 PN1 Q1
TGM Original Questions
The sum of the first \(n\) terms of a sequence is given by \({{n}^{2}}+n\).
- Find the \({{9}^{\mathrm{th}}}\) term of this sequence.
- Write down an expression for the \(n^{\mathrm{th}}\) term.
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Answer:(a) \(T_9=18\) (b) \(T_n=2n\)
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