Give IUPAC name for each of the following
`C_(6)H_(5)CH=C(CH_(3))_(2)`

Explanation

To derive the IUPAC name for the compound \( C_6H_5CH=C(CH_3)_2 \), we can follow these steps:

### Step 1: Identify the structure
The molecular formula \( C_6H_5CH=C(CH_3)_2 \) indicates that we have a phenyl group (C6H5) attached to a carbon chain with a double bond. The structure can be drawn as follows:
- Start with the phenyl ring (C6H5).
- Attach a carbon (CH) to the phenyl ring.
- The next carbon (C) is involved in a double bond and has two methyl groups (CH3) attached to it.

...