If $\mathop {\lim }\limits_{x \to 1} \frac{{{x^2} - ax + b}}{{x - 1}} = 5$, then a+b is equal to

JEE MATHEMATICS MCQ: LIMITS

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Analyzing +4 | -1

\lim\limits_{x \to 1} \frac{{{x^2} - ax + b}}{{x - 1}} = 5

, then a+b is equal to

View answer and explanation

Correct option: C

-7

Option C (-7) is correct because by applying L'Hôpital's rule or factoring and simplifying, we find that a+b = -7.

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