NationalHardAlgebra7–9

Sequences & Patterns

Sequências e Padrões

The $n$ th term of a sequence is given by $T_{n} = n^{2} + 3n - 2$ . Find $T_{10}$ and determine the value of $n$ for which $T_{n} = 68$ .

Both parts use the same formula: in one you substitute a value of $n$ , in the other you solve for $n$ .

Solution

Step 1 of 6