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प्रश्न
Choose the correct alternative:
It is given that f'(a) exists, then `lim_(x -> "a") (xf("a") - "a"f(x))/(x - "a")` is
विकल्प
f(a) – af'(a)
f'(a)
– f'(a)
f(a) + af'(a)
उत्तर
f(a) – af'(a)
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