Write the value of `lim_(x->a)(xf(a)-af(x))/(x-a)`.

Explanation

To solve the limit \( \lim_{x \to a} \frac{xf(a) - af(x)}{x - a} \), we will follow a systematic approach using the definition of derivatives.

### Step-by-Step Solution:

1. **Rewrite the Limit**:
We start with the limit expression:
\[
L = \lim_{x \to a} \frac{xf(a) - af(x)}{x - a}
...