1.

If a,b,c are in A.P.and f(x)=|(x+a,x^2+1,1),(x+b, 2x^2-1,1),(x+c,3x^2-2 , 1)|, thenf'(x)is :

Answer»

0
1
a+bc
`(ABC)/(a+b+c)`

ANSWER :A


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