- Let
`t`

, where_{n}= 2n - 1`n >= 1`

.

Find the answer of the following by hands:

- Let
`t`

, where_{n}= 2n - 1`n >= 1`

.

Find the answer of the following by hands:

- Let
`t`

, and_{1}= 2`t`

, where_{n}= 3 + t_{n-1}`n >= 2`

.

Find the answer of the following by hands: