- Let
`t`

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

.

Find the answer of the following by a`'for'`

loop of Python:

- Let
`t`

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

.

Find the answer of the following by a`'while'`

of Python:

- Let
`x`

, and_{1}= 2`x`

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

.

Find the answer of the following by loops of Python: