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[" If "y=a log|x|+bx^(2)+x" has its extr...

[" If "y=a log|x|+bx^(2)+x" has its extremum values "dfx=-1" and "f],[[" (A) "a=2,b=-1," (B) "a=2,b=-1],[" (C) "a=-1/2,b=1/2," (D) none of these "]]

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