JEE Main 2019 Mathematics question

Mathematics Limit JEE Main 2019

If , then a + b is equal to:

(A)1
(B)−4
(C)−7Correct
(D)5

Answer: (C)

Solution

and (L'Hospital) ⇒ a = −3, b = −4, a + b = −7.

Question ID VK-009538