यदि f : \(\mathbb{R}\) → \(\mathbb{R}\) एक a ∈ \(\mathbb{R}\) पर एक अवकलनीय फलन इस प्रकार है कि f'(a) = af(a) है, तो \(\mathop {Lt}\limits_{x \to a} \frac{{xf\left( a \right) - af\left( x \right)}}{{x - a}} =\) ?

1
(1 - a2) f (a)
2
\(\frac{f(a)}{a}\)
3
af (a)
4
\(\frac{f(a)}{1-a^2}\)

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