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# and x = 2, Then

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## Question

### Solution

Correct option is

a = 2, b = 1/2

We have y’ = a/x + 2bx + 1 and y’ (–1) = 0 and y’ (2) = 0

∴  –a – 2b + 1 = 0

and   a /2 + 4b + 1 = 0

⇒ a /2 – 2 a + 2 + 1 = 0

Hence a = 2 and b = –1/2.

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