Algebra Examples

$a_{n} = \frac{1}{2 n - 1}$

Step 1

Substitute in the value of $n$ to find the $n$ th term.

$a_{2} = \frac{1}{2 (2) - 1}$

Step 2

Simplify the denominator.

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Step 2.1

Multiply $2$ by $2$ .

$a_{2} = \frac{1}{4 - 1}$

Step 2.2

Subtract $1$ from $4$ .

$a_{2} = \frac{1}{3}$