Fx-a In-x-b x2-x has its extremum values at x-1 and x-2 then a-2 b-A- 3B- 0C- -3D- 1

The correct option is D 1 a/x+2bx+1=0 at x= 1,2 a 2b+1=0|a/2+4b+1=0 a+2b=1 | a+8b= 2 ⇒ b 1/2,a=2 ...

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Real Valued Functions

fx=a In|x|+b ...

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$f (x) = a I n | x | + b x^{2} + x$ has its extremum values at x = – 1 and x = 2 then a + 2b =

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