Algebra Examples

$a_{n} = n \cdot (n + 1)!$

Step 1

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

$a_{1} = (1) \cdot ((1) + 1)!$

Step 2

Multiply $((1) + 1)!$ by $1$ .

$a_{1} = ((1) + 1)!$

Step 3

Add $1$ and $1$ .

$a_{1} = (2)!$

Step 4

Expand $(2)!$ to $2 \cdot 1$ .

$a_{1} = 2 \cdot 1$

Step 5

Multiply $2$ by $1$ .

$a_{1} = 2$