If the function f(x)= cases a+bx, & x 1 cases is continuous, then what is the value of (a+b)?

NDA 2021 Mathematics question

If the function

f(x)=

is continuous, then what is the value of ?

Answer: (A)

For continuity at : left-hand limit right-hand limit . Left-hand limit . Since

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Question ID VK-033584