Differentiate w.r.t x using quotient rule .
`(sin x+ cos x)//(sin x - cos x)`

Explanation

To differentiate the function \( y = \frac{\sin x + \cos x}{\sin x - \cos x} \) with respect to \( x \) using the quotient rule, we can follow these steps:

### Step 1: Identify \( u \) and \( v \)
Let:
- \( u = \sin x + \cos x \)
- \( v = \sin x - \cos x \)

### Step 2: Apply the Quotient Rule
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